|
All done finally! The color is back, after I decided to replace the 221-42 IC used for subcarrier regeneration on the 9-27 module. Plus a spare module that now also works!
The cross reference listed for a 221-42 was an NTE 714 and Moyer's Electronics subbed and sent me two GE-IC-4, which is the GE replacement. The unopened part bags were dated 1981!
The IC looked like a Motorola, and probably was though simply labeled "GEIC-4" with no date.
Per Zeno's instruction, I cleaned the IC socket with ECG contact cleaner. My DeOxit is running low, and this is a good application for the common stuff.
This set required several non-standard parts including the focus drop resistor that looks like a little white rocket, lucky I had that one!! Now it looks fantastic, even before purity and convergence.
__________________
"When resistors increase in value, they're worthless"
-Dave G
Last edited by DavGoodlin; 08-06-2020 at 11:00 AM.
|