This is the first all-tube TV that I ever purchased. It was purchased off of Ebay in the spring of 2000 and is a very neat little portable set. I was the only bidder, and at $30, the set was dead, but complete.
This TV set uses a KCS111 series chassis. I really haven't had time to look at the set in detail enough to know if it is an A, B, D, F, or H designation. The neat thing about the chassis on this set is the way it is folded up to fit inside the metal cabinet, whose outside dimensions and shape are the same as the front of the picture tube. The depth of the cabinet is just a little deeper than the picture tube, so it is very compact indeed. This set is of the transformer-less type, so all the tube heaters are placed in series. This also makes the set hazardous to work on and use of an isolation type transformer is recommended. In addition to this particular portable, I also have the less common 21" version.
|6CU8||1st Video IF Amplifier-Vertical Multivibrator|
|4CB6||2nd Video IF Amplifier|
|6CU8||3rd Video Amplifier-Sync Amplifier|
|8AW8A||Video Output-Sync Separator|
|4AU6||Sound IF Amplifier|
|6AQ5A||Vertical Multivibrator-Vertical Output|
|8CG7||Horizontal AFC-Horizontal Oscillator|
|14ATP4||14" Silverama Picture Tube|
Two selenium Rectifiers are used for low-voltage power supply, and a 1N82A crystal is used for video detection.
Much like my other sets, restoration will be relatively straight forward thanks to the service information I have at hand. This set, even though it is completely dead, will probably not be as difficult to bring to life as one might think. All tube filaments check to be OK. The problem probably lies in a burnt out fusible resistor and/or bad selenium rectifiers, which, even if they were good, should be replaced. At any rate, I will probably discover bad filter caps as the root of the problem. And of course, I will be cleaning control pots and replacing the ever dreaded wax and paper capacitors, however, I counted only eleven of them in this set, so things are looking better.
The set has now had some time to sit on the workbench to be prodded with the meter. I have found two miniature 9-contact tube socket with a few broken contacts and many loose ones. The faulty sockets hold the 6CU8 Vert. Multi. and the 8AW8A Video Output & Sync. Sep. tubes. I do have two used 9-pin sockets for PC board mounting from an old Kodak movie projector. If they are good, I'll probably use them. One the sockets are replaced and the tube filaments are lighting, I should be able to go on to get the set up and running.
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