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Old 07-19-2012, 05:17 AM
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Down Under Down Under is offline
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Join Date: Jul 2012
Location: Melbourne, Australia.
Posts: 145
Talking Houston, we have raster! (Of sorts)

Hi Dave, thanks for your tip about the HOT. I measured pin 4 from the wiper of the width control and it was reading -1v. As it turns out, the width pot is no good, so it's off to the fun store this weekend for parts. After a bit of contact cleaner, I was able to get a very small raster with bottom foldover, but the boost volts are only reading 265 (should be 400) and the 260V to the other terminal of the width pot is reading low. (I have had it reading at the correct 260V in this session, so something is intermittent)

The EHT is too low as well, a huge hole in the pic and blooming. The telltale small arc from the fly was also a bad sign. I'll check over all the pots this weekend and see what happens. I also have the final 4 electros I need to replace the large can near the vert OP tranny on their way. Thanks for your input, it's certainly a step in the right direction!
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