JCM 800 2205 dated 1987.
Since about 30 years old and last known service dated from 1998 with new output tubes, it now got all them electrolytic caps changed and a new pair of EL34 power tubes.
New F & T cap vs old one.
A pair of caps hidden under the circuit board.
Guts after service, only mod is 1 ohm bias resistors added.
/Krister
The pair of caps under the circuit bord on the picture above, can you please tell me what they do and what they are, can you give me there value?
Was some time ago but looking at the schematic https://www.drtube.com/schematics/marshall/2205prem.gif
My guess is C41 and C42 10uF.
also there is a yellow wire with a little capacitor in between the wire it runs from the volume pot of the clean channel to the volume pot of the boost channel. can you help? thanks for the other information you gave me, this is the same circuit bord. under the bord.
Don’t know what it is. Modified at some time?
Send me a mail through the contact form about it,