RECTIFIER VOLTAGE PROBLEM on a JTM45 RI with HW board ?
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i upload little by little as my internet wi fi i share with a guy at the studio is shit !
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some other picts
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some other wiring
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- Flames1950
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i made some continuity tests and the only i found positive were the 3.15 black and red heaters to ground and together as well between the OT secondary to impedance selector and spk, but i think all that is ok looking at a schematic, unless i'm wrong.
maybe there are some other infos before in the thread, i could have wrote that could help finding a solution
maybe there are some other infos before in the thread, i could have wrote that could help finding a solution
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after i stole nearly all the fuses on my (many) marshall and hiwatt amps (cause they fit) i finaly started to think about the rectifier tube.
aspen pitman wrote in his book that the main symptoms for a bad rectifier are wether no sound at all even if it glows, or fuses popping when coming off standby into play, when everything else looks right ! !!
as i went through the circuit and comp many times without seeing any mistake, i took my old CT160 military AVO TESTER (UK), that would need a little service (but in france there are nearly nobody to work on old gears like testers, old amps, old synths....or for skyrocket prices, just wine cheese and frogs et les petites femmes de paris ...oooh lala ) and saw the rectifier was in poor shape !
the one that sent georges was testing good so i replaced it and it seeems to work now !! at least i haven't blown anymore fuses.
i will try it now...
aspen pitman wrote in his book that the main symptoms for a bad rectifier are wether no sound at all even if it glows, or fuses popping when coming off standby into play, when everything else looks right ! !!
as i went through the circuit and comp many times without seeing any mistake, i took my old CT160 military AVO TESTER (UK), that would need a little service (but in france there are nearly nobody to work on old gears like testers, old amps, old synths....or for skyrocket prices, just wine cheese and frogs et les petites femmes de paris ...oooh lala ) and saw the rectifier was in poor shape !
the one that sent georges was testing good so i replaced it and it seeems to work now !! at least i haven't blown anymore fuses.
i will try it now...