Quote:
Originally Posted by Findm-Keepm
What are the original part numbers? 121-868's are TO-202, not what you have installed in the set (TO-5's, probably 121-775 or 121-777s, IIRC). Zenith made a mod kit that modded the video outputs to the 868's. You seem to have received the replacements for the 868s, but without going through the mod. Were 868's what you ordered? With the original number, I can look up the mod kit for you. The mod kit has the 121-868 transistor, the proper heatsink and that gooey heat sink compound. The sams I have lists the 868s, but not the original part numbers, you have to get that directly off the transistors.
If your set is operating ok, there is no need to do the mod.
Cheers,
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Looks like what's installed are the 121-743 transistors. Do you know which are newer/better?
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