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Old 8th Nov 2017, 9:45 pm   #32
PsychMan
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Join Date: Jun 2013
Location: Fleet, Hampshire, UK
Posts: 1,765
Default Re: AR88 Low HT

After tracing out the connections for S21 (I think) and much time checking resistors and capacitors around V9, turns out the 6H6 was bad. I first swapped it with V8 and had more or less the opposite effect (manual and plain AVC very low volume, not the NL modes). Luckily I have an LF model and borrowed one from that and its now working as it was.

Will continue with the bathtub rebuilds and micamold replacements. Picked up some heavy duty degreaser from screwfix to help the clean up task, it looks like jizer but was nearly half the price for 5 litres

@Keith thanks for the tip about the screen resistors, a lot of components in there are a sod to get to - I can relate to the brain surgery comment!!
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