[TinCanAlley]

Originally Posted by Findm-Keepm

Why the modification? The 121-868 is specified for the CCII chassis - is there something wrong with your originals? Mod kits are always 800-XXX part numbers, so if you got a kit (and not simply the 121-868's), the heat sinks would not be there, as they are already with the CCII's.

Is there something wrong with the original outputs? Zenith engineers specified the ones in your Avanti for a reason, and if they are running ok, why mess with them?

Zeno is right, it seems that with all of the other troubles, you are only inviting more.

Cheers,

This is a CCII Avanti.

These are the upgrade transistors and were part of an upgrade kit. They came in a sealed packet of three and in an envelope with a different part number (I'll look for the envelope and find the number). Even Sams lists these as the outputs. When you search for the part number of the ones installed, it shows these as the ones to use. So Zenith at some point designated these as the correct ones for this chassis.

I put them in for testing. After seeing an overall improvement in image quality and color, I decided to keep them installed after going back and forth between them and the originals. The originals are put away if needed.