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Picture problems in Crosley 9-408
Well it’s been quite a while since I last posted here!
I finally got around to having another look at this set. In the meantime I bought new leads for my multimeter as I was having difficulty getting readings with the old ones. I think this was causing problems with the automatic range function on the meter because now I have B+ of 282V and +128V. Pretty close to what is specified here (275V. and 135V.). My B- is much better at -20V. and -1V. Should be -18v and -2v. The green wire to the focus coil reads -108v.
I also had a close look at the FP can capacitors and found nothing wrong here. I replaced four with the adapter-a-cap circuit boards and new components. The two twist locks soldered to the chassis seemed to be okay as well. C224 was re stuffed with new components even though the old ones looked good and measured with specs. C223 a three section can was left in place and not opened as I found nothing wrong with any of the other parts.
I now am able to get a picture but problems remain. The contrast is poor and washed out with inadequate vertical height. I can get the vertical to lock but the horizontal will not, it will roll to the right if I turn the control to the right and left if I turn the control to the left. It is not stable and eventually drifts. Also there is a bright white band running horizontally across the picture at the very top where the blanking bar should be.
I’ve replaced the mica capacitors and all out of spec resistors in the sync section. I don’t have an o-scope or any other test equipment. If anyone has any suggestions on how to proceed I would greatly appreciate it! Thanks in advance!
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