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Wells Gardner D9200 - Horizontal Collapse?
grantspain:
i think the 3 components, q412, q428 and c455 will do the job.
but if you have time it can't hurt to check all the compoents you list
i reckon q412 is causing the frequency problem, c455 is causing the horizontal size problem. q428 is the odd one here as its reading strange but not short, definitely needs replacing though
Rocketeer2001:
Grant, I hope it's ok if I lean on you for your expertise here. I used my LCR meter to measure all these parts. See anything amiss? In my little label, I have the Q number, then the schematic number, and then the actual number that's printed on the part:
Rocketeer2001:
and the last 4
grantspain:
as far i can see all those read correct
Rocketeer2001:
Ok!
Interestingly, that Q428 that you didn't like the looks of before, is now ok. I have similar conflicting results with Q430. I think the first time I removed them to test them I slapped them in the meter perhaps too quickly, and they were still too warm from the heat transfer of the soldering iron, which would give me screwy results. See the pics of the before (the first test) and after (yesterdays test). I just realized after looking at those numbers more carefully, that maybe I mislabeled my original photos from my first test, and they're actually the reverse...I'll go test those two transistors again just to be sure, haha.
Guess I'll just be ordering the Q418 and the C455. Dangit, I just noticed that in the schematics it says this cap is a 250V, but in the parts list it says its a 440V. If I recall, it's ok to get caps with a higher voltage rating than what they came with, so should I just get it as a 440V?