1993 blues deville bright switch problem

[bluestom50]

Thanks to this forum i finally have my deville sounding good again. My only problem is that the bright switch worked before i installed the fromel kit but does nothing now. Does anyone know if the kit somehow cancels the swich from working or do i have some other problem? As always any input is very much appreciated. Thanks, tom

[52 Bill]

I know that you posted about this amp before, and I went to the fromel site, but I still don't know what you have installed in the amp. Can you either tell us or at least link us to the exact mods that you have done?

[Jazz P Bass]

The bright switch, S1A, either connects the cap, C3, across R6 or it doesn't.
You should be able to verify that bit of logic with a meter.

[bluestom50]

This is what i added to my blues deville- bridged pins 2 &3 on mid tone pot---installed .1 orange drop cap atc6--.15 oarnge drop at c7--250p silver mica cap at c5---- 100pf mica across pins 1 and 2 on both vol and drive pots-----installed 470 ohm power resistors at r85 and rr86---91k resistor at r51--100k resistors at r52,r4,r9,and r18----- remove c50 under reverb pot and leave out---installed switchcraft input jacks-- as i said the bright switch worked before alterations- anyhelp is more than welcome, thanks ,tom

[Jazz P Bass]

Have you placed a meter across the switch to verify that the contacts work?
Have you made sure the connections from the cap to the switch are secure?

[bluestom50]

I feel like a fool-- when i removed the caps to install the fromel caps my old eyes must have read c-3 as c-5 or something. Therefore i am using the amp with no 750 1k cap jnstalled. I cant find one locally as i ruined the original removeing it. Is there any way to substitute another value cap.thanks again,tom

[JoeM]

Capacitor - Silver Mica, 750 pF @ 500V | Antique Electronic Supply

Not 1K, but 500v is plenty for the circuit. You can try other values here too, might find a value you prefer more than the original. 680pf - 1000pf? What values do you have?