by hermitcrab » Sat Jul 22, 2023 1:38 pm
TC Chris wrote: ↑Wed Jul 19, 2023 2:37 am
Is the output level equally low on both tuner and phono inputs? If not, could be the cartridge. If equally low, check the amp-section caps and resistors if you haven't already. Check the B+ voltage too.
Chris Campbell
Thanks Chris ... yea , I've checked the supply voltages, resistors , and the tubes all check out fine , except the 6M11 which I can't test .... most of the caps are ceramic and none tested shorted or open ...and going under the assumption that ceramics are long lasting I left them alone , this only has 3 electrolytics which have been replaced... who knows... a coupling cap could be bad in the audio stage ... the output rating for the 50C5 is only 2.7 watts ... so the volume is probably correct... I think this is just a glorified portable set ...
[quote="TC Chris" post_id=16008 time=1689734226 user_id=61]
Is the output level equally low on both tuner and phono inputs? If not, could be the cartridge. If equally low, check the amp-section caps and resistors if you haven't already. Check the B+ voltage too.
Chris Campbell
[/quote]
Thanks Chris ... yea , I've checked the supply voltages, resistors , and the tubes all check out fine , except the 6M11 which I can't test .... most of the caps are ceramic and none tested shorted or open ...and going under the assumption that ceramics are long lasting I left them alone , this only has 3 electrolytics which have been replaced... who knows... a coupling cap could be bad in the audio stage ... the output rating for the 50C5 is only 2.7 watts ... so the volume is probably correct... I think this is just a glorified portable set ...