For about 6 months the monitor suffered from vert collapse which could be cured with a swift smack on the case, then it gave up, just a single horizontal line. I took the cover off & found that tapping the LA7838 heatsink would cause the bottom 1" of the picture to 'hang' from the line. At this point I sent the monitor off to the local TV guy for repair. He phoned me a couple of days later saying the field output transformer had gone, taking with it a couple of ic's and a bunch of caps, and would cost about £200 to repair - which I declined. (A replacement can be bought for not much more) I now have it opened up on the bench and see the LA7838 has been resoldered. Any ideas
tia Mike (spamtrap - remove my footwear to reply)