I figured you lads would be able to answer this question if anyone could.

So, I have one of these electronic Tanburas, like this.



One of the pots seems to be bad and wouldn't clean, so it needs replacing. Upon disassembling and  doing basic diagnosis, the inside was a total Yugo. The plastic bodied pots they used were utter trash and several came apart, there were any number of half-assed jobs, etc.
OK, it needs a complete repot. There are 6.

The pots themselves are rather odd and I seem to have found what looks to be a brilliant alternative in a metal, similarly sized 100K pot NOS Russian pot with the right shaft diameter and pot size to fit in the chassis.



My original plan was to just replace the pots by desoldering and resoldering onto the same tab, since the existing pots are just like the conventional ones with the three side by side tabs.



Question: How do I determine what wire goes where, desoldering from a Side by Side by Side pot onto a pot as seen above, where the tabs are arranged on the bottom like that?

Talked about it a bit here.
http://www.ssguitar.com/index.php?topic=2898.0

You guys weren't lying about the heat issues.

I thought I had it conquered with cleaning contacts but today, I plugged in for a little jam, got no action and a bit of smoke out the back. Haven't even cracked it open to see what I'm up against, but it's non-functional at this time.

Seeing as I have a whopping $35 in it and I could part it out and make 5X that on the auction site, I'm comfortable with putting a few dollars into this one and making it right.

No sooner than I talk about doing a project that requires soldering, I get this. Speak of the devil.  :lmao:

So, the situation is this.
Marshall JTM 30 1X12.
Not working.
Got a bit of smoke.
What is Step 1?

Also, I've got my soldering iron in but have yet to purchase solder. There's an array of choices which I do not understand. What is the best type for this sort of work?

Thanks much guys.

OK lads. T- 10 hours and counting, picking up one of these.



... unsure yet if it's a 50w or 100w version, late 70's/early 80s 410 solid state with  intermittancy issues. Based on his explanation, mostly sounds like contact stuff. SS Jazzers are my weakness, these are very highly regarded from a tonal standpoint, the price is right for the relatively long drive so I'm diving in.

Prepurchase Question 1: Anyone familiar with these from a repair standpoint?

Prepurchase Question 2: Anything specific I should look for from a behavioral standpoint that perhaps should cause me to pass on the amp all together?

Presuming the amp is a go, I'll post further details here with detailed pics as soon as I get it home later this evening.

Hi everyone 

Seems like a great forum. Amps are my great weakness in the never-ending gear chase  :lmao:

I'm interested in learning more about how to do basic repairs and the like. I've arrived at the point where I can take stuff apart and clean contacts (which is a shockingly consistent way to bring a lot of discarded stuff right back to service) but would like to learn more about how to do more advanced stuff. I'm a pretty high level woodworker, have built a few acoustic and electric instruments, but the amp side of things is new to me, even though amps are really a passion.

Anyway, I've rambled enough. Thanks for the forum. Hope to learn a lot.