Anybody ever totally fix a Maxent MX-50X3?

[CoogarXR]

I have a MX-50X3 that is giving me the blues...

When I bought it (cheap and defective), it started out with the black screen with a flickering horizontal line occasionally. I know about the capacitor on the mainboard that goes bad on all of these. I popped a new cap in there, and it has a perfect picture for about 20-60 minutes depending on the ambient temperature. Once it heats up, the picture stays, but I get a random horizontal line flickering across the picture every couple seconds.

I have since recapped about 1/3 of the surface mount caps on the mainboard. Usually on the MX-42X3, the one cap fixes it. This MX-50X3 must have another magic bullet lodged in its nervous system somewhere.

Anybody dealt with this model? It's a panasonic-based TV, and I am 98.3% sure the problem is on the mainboard.