20-06-2021, 07:00 PM
Update....I've tested the speaker and its working perfectly.
I'm beginning to think that it's the output transformer. It looks like the only way I can really test it is to take it out of the chassis as it has a mustard cap that I installed (replaced. an old black 0.01uF Hunts...ugh!) across the primary (black and brown leads) so I am not sure that I can get accurate resistance readings whilst its still wired in. I did undertake a couple of quick resistance readings (I'm sure it wont be accurate or correct) and it was about 4M R across the primary connectors! From secondary to ground it was something like 400R. In both cases this was with no power on.
I have also attached a schematic that was kindly put together by Lawerence (who was extremely helpful) on another well known other forum. I wont dwell on this but to say my posts where not well received by some members so I didn't want to pursue it any further and cause issues!
As always any guidance or help is most gratefully received.
Best Regards
Rob
I'm beginning to think that it's the output transformer. It looks like the only way I can really test it is to take it out of the chassis as it has a mustard cap that I installed (replaced. an old black 0.01uF Hunts...ugh!) across the primary (black and brown leads) so I am not sure that I can get accurate resistance readings whilst its still wired in. I did undertake a couple of quick resistance readings (I'm sure it wont be accurate or correct) and it was about 4M R across the primary connectors! From secondary to ground it was something like 400R. In both cases this was with no power on.
I have also attached a schematic that was kindly put together by Lawerence (who was extremely helpful) on another well known other forum. I wont dwell on this but to say my posts where not well received by some members so I didn't want to pursue it any further and cause issues!
As always any guidance or help is most gratefully received.
Best Regards
Rob
if all else fails...read the instructions!
