Quote:
Originally Posted by rca2000
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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My previous post before your post explained that I had figured out that the TV was indeed from 1957 and that the reason why I had guessed 1960s was because of the fact that the TV had 14-83 UHF built into the set which I thought wasn't available until the 1960s but apparently it was available in the 1950s as well, which for this TV to have the 14-83 UHF built in like it does means it must of been a higher end unit because I've seen "high end" console TVs from the same time period that only had the VHF only Tuner on them and yet this is a 9" portable TV that has UHF built into it (although apparently according to the tube location guide inside the cabinet this TV was available as a "VHF Only" model as well because it has a tube listed for the UHF tuner that says "tube used in UHF models only" which tells me this must of been GE's higher end model of this particular series of TV Sets.)
And Yes you are right, this is an "AA5" Series Strung set which tells me that like you said if I was seeing tubes glowing in this set that means that the Picture tube's filaments were glowing but apparently my H-V is probably low enough that its giving me sound but no picture/raster, so I will try the "static check" on the picture tube face when I power it up again and see if it has any H-V or not, and if no H-V then I guess I'll have to check the H-V Rectifier tube to see if its weak and or check the electrolytics to see if they may need replacement.