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RobertF · 15th Aug 2019, 7:09 pm

Thanks for the replies.
I tested the 1.5k resistor which is spot on.
Double checked the caps I replaced are in the right position..
I then took out the valves one at a time then put it back in and took the next one out but it didn't change the cathode voltage very much.
I then took out V5 and V6 out together and then the voltage rose to 260v which is correct according to the manual.
They are both EL41's . One of them is a new one I had on a shelf the other one looks pretty clean and by swapping them over didn't make any difference.
Looking at the schematic is it possible that the output transformer is the problem.

Any advice welcome..

Regards

Robert

15th Aug 2019, 7:09 pm	#5
RobertF Triode Join Date: May 2019 Location: Cavan, Republic of Ireland. Posts: 42	Re: Bush SUG26 Thanks for the replies. I tested the 1.5k resistor which is spot on. Double checked the caps I replaced are in the right position.. I then took out the valves one at a time then put it back in and took the next one out but it didn't change the cathode voltage very much. I then took out V5 and V6 out together and then the voltage rose to 260v which is correct according to the manual. They are both EL41's . One of them is a new one I had on a shelf the other one looks pretty clean and by swapping them over didn't make any difference. Looking at the schematic is it possible that the output transformer is the problem. Any advice welcome.. Regards Robert