fdt-5bx5 Violently Exploding Capacitor

[old_tv_nut]

Also, have you checked D505 and D506 and the three caps connected to them?

[vol.2]

Originally Posted by old_tv_nut

Also, have you checked D505 and D506 and the three caps connected to them?

I pulled both damper diodes (I think that's what they are) and they both seemed good. Test OL in one direction and .4V in the other direction on diode test.

The caps seem to be fine. They measured okay and are high quality panasonic film caps.

I note that RV504 is labeled HORIZ SIZE, not "WIDTH."

Is there a difference? When I change that, it changes the width of the screen.

Next thing I would try is shorting L503 to see what happens.

L503 is rather large chunky magnetic core inductor with thick copper wire that is quite buried into it's structure. I don't see any way that I could shorten the wire without completely destroying it. I guess I could cut it somewhere in the middle and try to bodge it back together, but I feel somewhat wary to do that as I don't know how I'd keep it from shorting out.

Here's what it looks like:


There's also the small inductor, L502, but it's between the pincushion controls and not in the direct path of the yoke like L503 is.