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Old 17th Jan 2012, 4:53 pm   #83
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: Bush AC34, no sound.

We need to be careful as the circuit is not for this radio. The volume control is to earth so this set does not have -ve feedback or C29.

Bill, please confirm the following:
1) There is no other connection to the top of the 0.05uF capacitor (just the red wire to the output transformer socket).
2) The bottom of the 0.05uF capacitor is connected to the blue wire going to the tone control
3) Measure the resistance from UL41 pin 4 (green wire) to UY41 pin 7 (red wire)

My thinking at the moment is a) The UL41 pin 4 was really 0.257V as I just can't see where 257V could come from b) The 0.05uF is the tone control capacitor and we are missing the link
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