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Alrighty then, I got a little time and decided to have another look at this little Sony.
As you recall from the beginning of this thread, this set only has a vertical line from top to bottom, this is somewhat unusual since most Flyback powered sets can't make any high voltage unless the horizontal sweep is working, this is an early Sony though so it might as well have come from the Saucer at Roswell as far me working on it's concerned, I recognize the CRT and the on/off switch but after that...
Anyhow, it was suggested that one of the two large TO style transistors under the flyback cage was probably the HO, now since I burned up my Digital Multimeter with the Diode scale on it a couple weeks ago I only have a vintage Digital Meter to use and only on Ohms.
First I disconnected one leg of the transistor closest to the edge of the flyback cage, the set didn't operate at all like that so that one must be an oscillator for the High voltage, connected it back and disconnected the other one, now the set runs exactly the same as it did so either this isn't doing anything or it's doing something that can't be seen with no raster.
I removed it and tested it with the Ohm meter, it checks about 1 ohm both ways between the case and the one leg, the other transistor is the same number and it doesn't check shorted like this so... I'm guessing this one is bad.
It's a C806A would I be right in guessing it's actually a 2SC806A?
I see Sony sells those for (gasp) $22.55 each!
NTE has an Equivalent NTE283 for $10.53 but I wonder if it would hold up?
Also is there anything else that would have made this one go bad.
I wouldn't mind the $22 if I knew it wouldn't go pop as soon as I turned it on.
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