#1
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Emerson 600/610 HV transformer
The Emerson 610 that I got at the ETF convention appears to have an
open HV transformer HV winding. It oscillates but no HV, and that must be the reason. Actually this transformer looks absolutely like new. Is there a source for these or equivalent replacements? |
#2
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I will ask in this thread before starting a new one.
I was able to repair the coil ... it was probably a replacement coil that never worked at all, resulting in the set being retired. This is because it looked never heated and the one nut holding it was missing and the other loose. The HV winding had never been properly stripped and soldered. I hope that is all that was wrong with it. After a complete electrolytic and paper recap it works well, with good raster geometry, brightness, and a passable picture. The alignment might be a tad imperfect. Edit: I found that a Rider's does exist, Vol. 4. A photo of one schematic page was posted by Banderson in a thread on an Emerson: http://www.videokarma.org/showthread...hlight=emerson This is for the 639, which has the same sweep circuits. Does it have waveforms? I had to replace zero resistors. All controls on the back and the two hold controls need to be near center. The only thing is that the two hold controls are rather sensitive. Once set and at constant line voltage they are quite stable. But if the line voltage changes a lot they need resetting. A check with a 'scope seems in order ... but since it works OK I really have nothing go on. Sam's has no scope pictures. I can find no Rider's. Does anyone else have any more info on these sets? Last edited by dtvmcdonald; 06-05-2014 at 11:11 AM. |
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