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Old 07-05-2015, 07:48 PM
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rca2000 rca2000 is offline
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Location: cincinnati,ohio
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This set is OLDER than 1960 It is in sams 359-7, which makes it about 1957 or so. I was thihnking it was that little set they sold in about 1963 or so...with the wrap-around chassis...but it is a LOT older. GE"s answer to the 8" 8PT-7030 style RCA SET.


You need to know if the FILAMENT Of the CRT is lit. I think this is a hot chassis set so it VERY likely has to be lit for the other tubes to be on.

I agree....it sounds as if you have lost HV.

It is POSSIBLE...that you have a low B+ problem. Low B+ MIGHT give you enough powert for the SOUND to work...but NOT the deflection and HV.

it is ALSO possible....that you have lost BOOST voltage. This is a voltage that is produced by yoke action and it is then ADDED to the main B+ voltage. Sort of hard to explain...but it helps to run the H-out and V out ckts AND voltages for the CRT. if it is LOW or GONE.. you will NOT get HV or very LOW hV and no raster.

Like others have said...do the 'static test" on the front of the tube and see if you get any "static cling" from the tube. Good static from it meant likely good HV.
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