Bad Opto on Ampeg G-S-12-R Reverb Rocket

[nateflanigan]

Hello, I'm tuning up a vintage Ampeg G-S-12-R Reverb Rocket.  Aside from the usual maintenance the tremolo doesn't work.  I suspect the optoisolator has gone bad.  As with all things from this era of ampeg, it's a totally funky looking part.  Would I be able to replace this with the standard fender roach?


http://el34world.com/charts/Schematics/files/ampeg/Ampeg_GS12R_.pdf

[DummyLoad]

try this site.

http://www.fliptops.net/catalog/p-100087/tm1m1-r-tremolo-module-for-vintage-ampegs


--pete

[nateflanigan]

Oh, cool!  That seems like the right track.