Quote:
Originally Posted by reartech
Quote:
Originally Posted by ms660
The problem is that I don't fully understand what it is you're doing but at the moment I'm thinking that you have disconnected the head input circuit to C13 and replaced that input with a signal from your BT unit and that in record it sounds good and in playback it sounds weak?
If that's the case then the only part of the amplifier circuit that should alter when changing from record to playback is the feedback circuit between the two triodes, that's switched by relay contact W1, in playback the different components that are switched in are C10, R6 and R9, it might be worth checking C10 for leakage.
That's assuming that contacts B1 or B2 are not in the closed position due to whatever reason when playback is selected.
Lawrence.
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Ok thank you sir I will check and update |
once again thankyou for support and valuable suggestions Now that problem solved its Capacitor issue i got same result in Record and play back also by connecting through Head but it is ran only for 30 sec ,afterwords the volume became low as it is ;but the change is it is same in Both mode, hence Now i checked ecc 81 voltages 2 volts i got for appropriate pins where as insted of 100/140 i got only 25volt when i remove volve ecc 81 voltage is as noted by diagram on load voltage drops please tell me is valve issue or some other issue
Regards
Krishna