Marshall Jcm 2000 Dsl 50 Schematic

The DSL 100 and DSL 50‘s Channel B features two modes. The first, Lead 1, gives an open high gain crunch, with traditional Marshall characteristics, similar to a hot-rodded JCM 800 2203 master volume. The Lead 2 mode however gives a mid-boosted tone coupled with even higher gain possibilities. Gain Controls the gain level for Channel B. Marshall 2000 250W Schematic Marshall 2001 375W Schematic Marshall 20W 1917 Schematic. Marshall 25 Anniversary Silver Jubilee 50 100W 2555 Schematic Marshall 30 Anniversary 6100 100W Schematic Marshall 30W 5203 Schematic Marshall 50W 2204S Schematic. Marshall Haze MHZ40C Schematic Marshall JCM2000 100W DSL100 Schematic.

I have an amp head of the model listed in the title. It blows the main fuse as soon as it is powered on.

A little probing around shows that my primary winding in the main power transformer has a DC resistance of about 2.0ohms. That would explain why the fuse pops immediately.I have managed to find an authentic replacement transformer as the company that makes them is no longer in business.

But the folks in England want $150.00USD for it.Before I make the purchase I was wondering if anyone here in the states has one of these AMP heads and could put an ohmmeter on the prongs of the power cord and turn the power switch on and let me know what the DC resistance they read is?Much appreciated.Jim. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!'

Marshall Jcm 2000 Dsl 100

- Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

Glad you didn't Fedex your transformer. I don't think that your dc resistance test proves much of anything without a point of reference. Hopefully somebody can help you out.Depending on how hard it is, you COULD disconnect the secondary leads, insulate them and see if the transformer by itself pops the fuse. You could also probe the power to ground on the other side of the power supply ( remember that the caps have to charge) to see if there's a short there. Then you coulsd probe around the power supply a bit. I hope that you have a schematic.This site seems to have schematics if you don't.Also, I know that you're a high tech experienced guy but- please be careful with those 5v tube voltages.Good Luck,hj. University was decades ago now but I remember that an ideal transformer has zero ohms winding resistance.I measured a 200W toroidal 240V primary and got 3.5Ω.I measured a 100W E-I core 240V primary and got 4.5Ω.I measured a 20W E-I core 240V primary with a known shorted turn on the primary and got 5.5Ω.I'm guessing you're at 110 VAC windings so you can probably halve my measurements; so your transformer doesn't look completely wrong.Do you have a Variac?You could drive it with 20 or 30V or so and take some measurements without popping the fuse.

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'?

A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. Back on topic, I have determined that this transformer is shot. I took it out of the chassis, and connected the primary for 230v service and out a 3amp circuit breaker in series with my 120 vac mains and applied power. The breaker did not blow, but the transformer sitting there with nothing connected to its secondaries started to buzz pretty bad, then the smell of melting epoxy told me to cut the power. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.'

- Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

Kartman wrote: I would've thought Marshall would have wide support in the U.S. Unless there's a trade embargo from the U.K for them stealing rock n roll!Oddly enough it's not simple finding parts here in the USA.

Apparently the OEM for the power transformer is not in business, but their website is still running, albeit as more a museum of sorts.I have found suppliers of replacements units, that are either 'enhanced' models, or simple copies of the original, but they cost twice as much as importing one from the U.K.!!As today is an unofficial Holiday of sorts here in the USA I will contact a local Marshall dealer and see if they carry the Transformer, and get a price, will get back to you on that. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker.

Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'?

A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly.

It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. Ka7ehk wrote:The short does not have to be between windings. You can have a short between two turns in the same winding. That results in a shorted turn (or turns). The turn can get quite hot if there is enough power available.JimEntirely possible as the epoxy impregnation looks pretty thin, and the enamel coating on the wires is also pretty thin looking as well.Either way, the transformer is NG, I have an RFI in with Marshall and I have a replacement ready to go once I place the order.We shall see. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.'

- Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!'

- Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!'

- Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. Jim - is it the model with the leaky Pcb? The replacement pcb assy isn't too expensive from what i was told (a friend fixes this kind of stuff).

Then there's the tubes - they maybe getting a bit tired. To bad you can't just go down to radioshack and use their tube tester like in the old days!I'd suggest you talk to the Marshall reps and they should be able to tell you if your model/serial has the problem or not and suggest a course of action. My guess is it is not going to be cheap - but valve amps aren't cheap to begin with.

From the blogs(I have never read a 'blog' until now) the leaky PCB and resistors affect the series 3, 5, and 7 boards. This one is a series 5 unit do it has the leaky PCB, and I have not checked the tubes.I looked at purchasing a tester, but they start at $500.00 for a decent one.My email to MArshall Garnered an automated response saying thanks for contacting them, we will get back to you.yeah right.Kinda tough to find a MArshall rep here in the states.Sam Ash and Guitar center are the two retail biggies, but they are not going to be straight up with you as they want to sell amps.Will look online for a Marshall rep that is independent and see if this is worth the effort.Jim. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker.

Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly.

It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. I did a quick Google and there is around a dozen Marshall service centres within coo-ee of long island. I'd expect the service centres will want to repair the amp, not sell you spares.

At least they should be able to give an idea of the cost. I suppose the question is why the transformer died - did it simply die due to a shorted turn, or did something else help it on it's way? I can't recall what effect the leaky pcb has, but if if it makes the thing oscillate or otherwise turns on the valves, they're going to get pretty pissed off and need replacement - they're not cheap - probably around $30-50 usd each at a guess.

Schematic

Or if the transformer did die of natural causes, the pcb may have already been replaced - it helps to know the history.I've been told the bias for the output valves drift due to the leaky pcb. Biasing of valve guitar amps is the thing of myth and legend - it changes the 'character' of the sound since distortion is good in a guitar amp - but only the 'right' kind of distortion and that's why valve amps are preferred. Eddie Van Halen knows a thing or two about tweaking bias to get the 'right' sound. But I digress.

Kartman wrote: I did a quick Google and there is around a dozen Marshall service centres within coo-ee of long island. I'd expect the service centres will want to repair the amp, not sell you spares.Correct. I am well aware of how many service centres there are on Long Island.many of which are not MArshall certified, and most will not just tell you anything over the phone.minimum bench charge.as I am a repair centre this route would not be helpful. The blogs are pretty informative though.mostly telling to not bother.the transformer is $150.00 and a PCB is 250 British pounds.the amp in good condition is $800.00usd so not sure if it is worthwhile. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!'

- Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

Well this amp has quite the press on the internet with the leaky PCB, bad mains transformer, wrong bias resistors etc.I contacted Marshall, and two days later I get a terse email telling me 'Yep, sounds like the transformer is bad' Good luck, and Good Bye.There are aftermarket transformers for the thing, but they are twice the size and over $300.00usd plus shipping! A close replacement is $117.00usd plus shipping.The customer wants an ORIGINAL Marshall Transformer. Too bad Dagnall, the manufacturer is out of business.Turns out some searching produced two placed in Europe that have stock on the original! One wants $129 Euros plus shipping, the other wants 75 pounds Sterling plus shipping. I went for the one in Britain and for a grand total of under $140.00usd they shipped a 4Kg hunk of steel and copper FedEx OVERNIGHT! Had it here at 10am this morning.Installed the replacement and the amp is working again.

I was told not to correct the bias as he likes the sound as-is. The replacement tranny does buzz somewhat, but there is only so much I can do. Tubes get really warm/Hot during play time so I am hoping this thing is fixed.One lesson learned in this is these newer amps are very poorly built. I had a spade terminal break off the PCB just by bumping it.I wonder if these things break off from the vibrations of the road abuse, and the heat/cooling.I'd still like to know what failed in the transformer to begin with where the thing DC meters out ok, no winding's shorted together, DC resistances looked ok too.

Oh well.not going to pull the other one apart to find out.Thanks for all the suggestions everyone.Jim. I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?'

- Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user. Tubes get really warm/Hot during play timeThat's what tubes do even if not playing, otherwise they are dead.Are you saying that the anodes start to go Red?

If so there is an overload or the biasing is not correct. Output transformers with shorted turns would do that and of course eventually may take out the mains transformer if the user keeps on putting larger fuses in because the correct size blows.I guess you are aware of the old technicians trick to leave a hot valve or a charged electro in hand reach of pestilent kids who would not leave you alone while you are trying to fix their TV and want to stick their noses everywhere.not that I ever did anything like that of course! I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?'

- Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie'The critical shortage here is not stuff, but time.' - Johan Ekdahl'If you want a career with a known path - become an undertaker. Dead people don't sue!' - Kartman'Why is there a 'Highway to Hell' and only a 'Stairway to Heaven'? A prediction of the expected traffic load?' - Lee 'theusch'Speak sweetly. It makes your words easier to digest when at a later date you have to eat them;-) - Source UnknownPlease Read:Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user.

Click on photo for larger view JACK, 1/4', MONO PC MOUNT PLASTIC, GENUINE CLIFF 4 PC board terminals, switched. Used in many brands of amps and other equipment. With nut and washer. Original Cliff UK part number CL1169. Part #J-503 $1.99 Click on photo for larger view SAVE WITH MULTIPACK! JACK, 1/4', MONO PC MOUNT PLASTIC, GENUINE CLIFF UK, PACK OF 6 4 PC board terminals, switched.

Marshall Jcm 2000 Dsl 50 Schematic

Used in many brands of amps and other equipment.Pack of 6 jacks, with nuts and washers. Original Cliff UK part number CL1169. Part #J-503-6 $9.99 (Set of 6 jacks) Click on photo for larger view JACK, 1/4', MONO PC MOUNT PLASTIC, GENUINE CLIFF UK, RED NUT, REPLACEMENT FOR Marshall® SPEAKER JACKS.

4 PC board terminals, switched. Used in modern Marshall® TM amp heads (JCM2000 series TSL and DSL, for example) as the output jack for the speaker cabinet.

With red nut and washer. Part #J-503R $2.39 Click on photo for larger view Note: Nut & Washer NOT included - reuse original, or order JN-916 JACK, 9-PIN Low Profile, 1/4', Marshall®, Fender®.Used as the Effects A return jack and Effects B return jack on the rear panel of the Marshall® DSL-50, DSL-100 and TSL-100. Replaces Marshall part number J3D86074.Nut and washer are NOT included. Chrome trim ring.Marshall Jcm 2000 Dsl 50 Schematic Diagram.

This guitar appears to have spent 9. The setup is.

Typical Prestige, very low all the way up the neck. Why not get this barely played beauty, set up to. Fender Precision Bass Lyte Deluxe. The P- Bass Lyte was designed as a smaller and lighter version of the traditional. Marshall Jcm 2000 Dsl 50 Schematic Design.

Still delivering the widest, deepest footprint in heavy music, both the Recto. Essentially you now have the power to harness either 2 or all 6 power tubes to each channel for power ratings of 5.

Watts of class A/B power via the independent 5. Watt Power Switches.NUT & WASHER NOT INCLUDED - REUSE ORIGINAL OR ORDER JN-916, BELOW Part #J-560 $2.95 Click on photo for larger view Note: Nut & Washer NOT included - reuse original, or order JN-916. JACK, 1/4', Marshall® TSL100, 4-PIN. Used as the Effects A and Effects B send jack on the rear panel of the DSL-50, DSL-100 and TSL-100. Also used as the input jack on the Marshall® MS-4 Micro Stack. Note: The original jack on these Marshalls had 5 pins - this replacement has 4 pins. The pin that is missing on this replacement jack has no function in the circuitry.Replaces original Marshall® part number J3D86075 NUT & WASHER NOT INCLUDED - REUSE ORIGINAL OR ORDER JN-916, BELOW Part #J-6075 $5.95 Click on photo for larger view JACK NUT, PLASTIC, GENUINE CLIFF UK, REPLACEMENT FOR Marshall® AND OTHERS.

Replacement jack nut as found on the J-503, J-504 jacks. Part #J-5NT $0.50 Click on photo for larger view JACK NUT MULTI-PACK - SAVE! 6 JACK NUTS, PLASTIC, GENUINE CLIFF UK, REPLACEMENT FOR Marshall® AND OTHERS.

Replacement jack nut as found on the J-503, J-504 jacks Part #J-5NT-6 $2.39 Click on photo for larger view JACK NUT, PLASTIC, GENUINE CLIFF UK, RED Replacement nut for the J-503, J-504.Program Za Provaljivanje Lozinke Na Facebooku. Red nuts on these jacks typically are used on later model Marshall® amps to designate the 'speaker' jacks. Part #J-5NTR $0.60 NUT AND WASHER, CHROME, KOBICONN OR JALCO TYPE. Fits J-506, J-506A, J-507, J-530, J-531, J-532, J-532G, J-533, J-533G, J-539, J-539G, J-540, J-545, J-6074, J-6075, J-560.Part #JN-916 $0.79 SAVE WITH MULTIPACK! NUT AND WASHER, CHROME, KOBICONN OR JALCO TYPE, SET OF 6. Fits J-506, J-507, J-530, J-531, J-532, J-532G,J-533, J-533G, J-539, J-539G, J-540, J-545, J-6074, J-6075, J-560.Set of 6 JN-916 nuts with washers Part #JN-916-6 $3.59 (For set of 6 nuts and 6 washers) Click on photo for larger view POT, 11mm, Marshall® TYPE, PC MOUNT. This pot has 4 pins.

Includes mounting nut.POT VALUE MARSHALL PART NUMBER APPLICATION B5K POT7 PRESENCE VR10 B20K POT2 REVERB A VR5, REVERB B VR6, MIDDLE VR8 B200K POT5 TREBLE VR9 A1M POT6 CHANNEL A CLASSIC GAIN VR1, CHANNEL A CLASSIC VOLUME VR2, CHANNEL B ULTRA GAIN VR3, CHANNEL B ULTRA VOLUME 1 VR 4, BASS VR7 Select Pot Value in Options Part #P-VKG-XX $6.95 Select Option: Quantity: Click on photo for larger view Complete Marshall® POT KIT, 10 POTS TOTAL. ORIGINAL Marshall® REPLACEMENT PARTS. Marshall® MODEL DSL50 in the JCM2000 SERIES.

Complete replacement pot kit for the Marshall® Model DSL50 in the JCM2000 amp series. 10 pots on the front panel. Part #MPK-26 $56.95 Click on photo for larger view KNOB, Marshall®, PUSH ON D-SHAFT (Read applicable models!) Standard original Marshall® control knob, push-on type, for D-Shaft pots used in the following Marshall® amp models: DSL-50 Head Original Marshall® part.

Part #MKDS $2.99 (Single Knob) Click on photo for larger view Revisit™ 6 ft POWER CORD, DETACHABLE, 3-WIRE, 18ga, 6 ft LONG, IEC CONNECTOR AT EQUIPMENT END.

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