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Topics - Bear

#1
I picked up a Roland Jazz Chorus that is as DOA as was advertised.  My last buy-it-broken experiment had just needed deoxit, but this one is no lights/power/output, so I want a methodology to proceed on.
#2
Amplifier Discussion / Belton mini reverb pans?
January 12, 2016, 05:48:17 PM
Anyone have experience with the Belton "mini" sized reverb pans?  Like BMN2 or BMN3 series?  A few inches shorter than the normal short pan configuration seems like it could enable a tight squeeze or two, but I wanted to see if anyone had gone there before trying to procure one--U.S. distributors seem to all pass on the minis.  As good? Nearly? No good?

(I'd think of the Digilog modules for new SS design.  Shamefully, I'm looking for a tube design I'm sketching out, but this forum seems the most likely to have experience with non-traditional pans, so I'm asking here first.)
#3
I picked one up for a song and don't need the schematic yet, but better to be ready.  The JX-20 and -50 can be found online, but not this guy for some reason.  I presume I can extrapolate from those and visual inspection, but figured there was a chance someone here might have it.

Great little amp, BTW.  I bought it expecting it would give the blackface/silverface feel that it does have in spades, but I was surprised at how decent the pull-boost overdrive is.
#4
The Newcomer's Forum / Low-voltage chipamp newb stuff
August 22, 2014, 10:22:01 PM
I've got some 386's on hand to breadboard some beginner poweramp stuff with, but I get that they're limited beyond their available power output.  The appeal of low voltage components for experimenting is high, though--a 9v is easier than doing a bipolar supply off AC mains.

So I'm looking for other components worth experimenting with.  The LM380 is supposed to be the non-crippled parent version of the LM386, and it looks like it could run quite capably off a wall wart with decent current capacity, simplifying life greatly.  Or am I off base on that?  Is the heatsinking via the pins in the 14 DIP as easy as advertised?

Any other low power chip amps of note that I could similarly outsource the power supply to batteries or wall warts or such?  Any decent "cookbook" references for any of them?
#5
Hi, all.  I'm gonna be the total newb by joining just to ask for help.  (Though I've lurked for a while and downloaded Teemuk's book a while back.)

Picked up a Marshall Lead 12 in "needs repair" condition.  Powers up, plays, passes audio, all jacks work, output works, all pots seem to do something.

The issues I'm having are low output, low gain, and lots of static with either input and as the knobs turn.  I haven't removed the board from the chassis yet, but component side seems clean, with no obvious issues on the electrolytic caps.

What would your order of operation be in my shoes?

My thought is first try a good clean of input jacks and pots, and a check of the board to see if the traces and the solder joints are holding up.  After that, I guess my next moves are checking that the pots aren't shot, but after that, I'm basically in replace-and-pray.

(Hoping I can get this guy rocking next to my LED-mod'ed Pathfinder 15R for a bedroom-level My Bloody Valentine rig.)