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Old 4th Jun 2010, 10:13 pm   #8
squinancy
Retired Dormant Member
 
Join Date: Aug 2007
Location: New Malden, London, UK.
Posts: 70
Default Re: Vidor CN429 'Lady Margaret' fell silent

I have checked all the suggested culprits:
The spring-loaded switch is fine. Strengthened it with new springs and filed the connecting lever a few months ago. There is a firm connection.
No "pwong-pwong" sound from the speaker when valves are knocked. The set is entirely unresponsive, dead.
Speaker works when connected to another source.
HT on the primary tags of the output transformer is 79.8 volts. On secondary tags absolute zero.
"LT measured betwen pins 1 & 7 of any valve": 1.46 volts on the DK96 and the DL 96, but I do not seem to register anything on the pins of the DF 96 and DAF 96. (It could be because of the jumble around the wires, but I think I am right.)
Perhaps the DL 96 and the DF 96 are a bit warmer to the touch than the other valves when the set is left switched on for a longer period.
I wonder if this makes any sense. Should I try to replace any valve? Or does it suggest the output transformer?
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