Trinitron Horizontal Flicker

[MadMan]

If it's anything like my old Trinitron, ALL the solder joints will be bad. Get yourself a REALLY good magnifying glass, and actually remove all the circuit boards and just look over every square inch of them under a good light (I prefer sunlight). Cracked solder joints ('cold joints') are usually very obvious when you can see them well. A good joint should be smooth and shiny, a bad one will have an actual crack in it, though it's hard to catch unless you're REALLY paying attention.

Problem areas on any pcb are anything large sticking up from the board (big caps, plug sockets, soldered-on riser boards) and otherwise anything that exerts physical stress to the joints.

Speaking of which, doesn't that TV have riser boards plugged into the main board? Maybe the contacts are dirty. Blow it out like a Nintendo cartridge.

[Outland]

Here are some photos of the boards.





When I took the back off, I vacuumed most of the dust off as well. The flickering has not returned yet. Next step is to plug everything back in one by one and see if the flickering returns.

Thanks for the advice about looking for cold joints, I will need it if Trinitrons are susceptible to bad joints.