cfcubed
1000+ Head-Fier
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- May 1, 2007
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Well it seems that your A/C adapter is holding up the load but not one of your three PS sections (HV, LV, heater) is performing correctly, again they are all too low. BTW your CRD subs should be fine.
Can only think to suggest carefully re-reviewing all the parts/orientations & solder joints from the tube socket to the back of the board. Something is affecting all 3 PS circuits: http://www.cavalliaudio.com/diy/cth/main.php?page=schematics/psschematic If possible I'd like to know the draw on your A/C adapter but it may not be feasible to make the series amperage measurement.
Can only think to suggest carefully re-reviewing all the parts/orientations & solder joints from the tube socket to the back of the board. Something is affecting all 3 PS circuits: http://www.cavalliaudio.com/diy/cth/main.php?page=schematics/psschematic If possible I'd like to know the draw on your A/C adapter but it may not be feasible to make the series amperage measurement.