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I have used Davidsons for my 50/50 two times. Long periods in between each service. Both times it took a bit to get my amp back, but it did come back fixed. Don't think they've been an authorized mesa service shop for quite some time. Unless things changed. Let us know how things go if you...

Thanks I think you had it right. As per the repair sheet they replaced a 220k/.5 spec resistor. Wish I knew how to read schematics and solder better lol.

Thanks, I put a meter on low power at switch and solder connection on board across to chassis and it looks like the low power is open somewhere.

My high / low switch suddenly stopped working. It only works on high. Any ideas?.

hope this helps or isn't to late links may be better resolution. https://postimg.cc/Z9NXNqpq https://postimg.cc/v4fvLxqC

Thanks, I ordered from boogie themselves. I'll tell you I've ordered from them before and they really do have great parts and customer service departments. Prices are incredibly reasonable, shipping is too.

I'm looking to replace a volume pot on my 50/50, the backside has some numbers on it 5981048 137 18850 roc. When I google mesa boogie replacement pot 591048, I get a hit for mesa boogie part number 5981048 which is for a pot. Are these numbers stamped on back mesa numbers or are they...

Does the fifty fifty have the same volume on ch A as Ch B?, reason I ask is. I just got my 50 50 back from repair shop, they replaced some orange caps and 1 blue one to resolve my overheating tube. A new set of tubes and some hard earned dollars later I'm still having an issue with channel A...

I guess I'll have to take it in and see. Looks like It'll be a pricey repair if I need to get new tubes. 1 hr min shop time at 95.00 + parts, tubes. I also have a volume pot that has some issues and some static when I first come out of standby for a minute or so. Oh well I've had it for close...

My 50/50 has some issues but had been working fine up until yesterday. I turned it on flipped the standby and a minute later smelled a burning smell coming from the rack. I figured it was just dust burning off the tubes but it got worse and worse. I flipped the rack around and noticed 1 tube...

If you're really interested I could work with you, I haven't done a thing to it since I got it, it does have a sweet really nice thickness to it, nice job on the mod, but I am looking to sell off some stuff.I got rid of gear I swore I'd never sell after acquiring over the years, but you know how...

Sold

I have a non modded and a modded studio pre which was modded by a member here, then sold to another member, then I bought it. I'd also have to agree with your review of the sound change. I've also find mine is quieter(less noisy) than the non modded studio. The modded amp I bought according to...

I don't know where you live, but there might be some better choices besides guitar center for amp repair.Sending it back to mesa is always a good option.If you're going to spend 150 to get it fixed I'd rather spend 250 and get it looked over and fixed proper buy the guys who put it together.Just...

PM sent.

What kind of tube did you put in?, was it a low noise?

I think you've posted the same pic twice, but I still don't understand your question.I would imagine after all these years the tubes have been changed, so it's a crap shoot as to what you got in there. In the Studio preamp the schematic shows the lead channel is controlled by v1 + v3.I've been...

Hey R cod, not to hijack your thread, but I see you use a peq2200.I just got one off ebay at a really good price.How do you like it?, I've never played with a peq before, but I've read good things about them.Any suggestions on setting it up?.I haven't got it yet but it should be here in a few...

That's awesome!, good job.Saved yourself a bunch of dough too.I never tried a microtube, but I've heard good things about them.I've got an ADA MP1 that I've had for almost 20 years, but needs a little repair work, and an MP2 which is in my rack, and sounds great.They made some good stuff, and...

At this point like Ando says you might as well either try to fix it, or send it to a good repair shop.I'm sure sending it to Mesa won't be a cheap repair if they want to replace the whole board,I figured you could send it over have it looked over, cleaned up, replace the little circuit board and...