PHASE INVERTER Circuit Mods FOR 400/500b/800b/500c/800c (NEW links)

[larryderouin]

Here are the links for the NEW UPRATED and engineered Phase inverter Mods to the 400/500b/800b/500c/800c by Dave Gillespie as of 15APR2019 (just under the IRS Deadline)

NOTE: for those who have an 800C with SERIAL #'s from 10001-19999 (1963 Executive) use the 500b/800b instructions - Schematic in the thread linked below.

500C
https://audiokarma.org/forums/index...ose-revisited-for-500c-800c-receivers.857297/

800c 20001 and up....(Incl. 1964 Executive)
https://audiokarma.org/forums/index...oose-revisited-for-500c-800c-receivers.857297

800c with SERIAL #10001 to 19999 (1963 Executive ONLY!)
https://audiokarma.org/forums/index...art-ii-for-400-and-500-800b-receivers.860275/

All 400/500b/800b.
https://audiokarma.org/forums/index...art-ii-for-400-and-500-800b-receivers.860275/

For any other unit, PLEASE Post a Thread in the FISHER FORUM.

 

[thornev]

I cannot find Larry's "quick and easy phase inverter adjustment" post. Help please. It's supposed to be in this thread: https://audiokarma.org/forums/index...ose-revisited-for-500c-800c-receivers.857297/
Thorne

 

[larryderouin]

I deleted the original thread, after the uprated and improved procedures and circuits came out. IT's on the wayback machine here.......
https://web.archive.org/web/2017031...ck-and-easy-400-phase-inverter-adjust.559415/

Also the notification threads for this are on the Forum stickies.
https://audiokarma.org/forums/index...nverter-thread-for-400s-500b-c-800b-c.866451/