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Good News!
okay...good news, reasoning that because the grid had ac present I would likely be looking for a shorted cap. Sure enough found defective but NOS sprague .0047 video cathode bypass cap... just because it hasn't been used old is old and I should have checked it before installing it. Replaced cap and hot socket and violla got my -45v at grid and what do you know...full raster with snowy but good picture. Still no sound though...some audio buzzing. No redplating and a good 13.5 kv at anode. Any takers for the sound issue...6bq5 and output tranny test good. This had great audio before my buddy got a hold of it. My guess is that some people are a little timid about lifting that board...ground tabs are pretty fragile and heater grounds are directly connected to three of them. repaired a few foil pops while under there. time for some pizza and a Sam...then a little audio signal tracing. I love this site...pics to follow as soon as i remount the crt in its swivel.
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03-14-2015, 02:23 PM
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