I don't want to put a damper on things but I;d be surprised if faaulty degaussing components produced an even colour change over the whole screen. I'd think it's more likely it's something to do with the video driver. I'd suspevt the video "jungle" chip if it was just the TV picture that was getting screwed up but if the computer (VGA ?) input has the same problem it could be the video jungle chip - or components, but if you're using a digital input or component input (separate RCA socket for the 3 primary colours) then I think the video driver stage is more likely. The fact you can get a white screen would tend to indicate that the screen itself is OK. The earlier symptoms do sound like a degaussing problem though so it would be a good place to start. Note that on some TVs, the degaussing circuit only works when the power is applied from the mains - not on turn on. (I suspect that the mains switches are not rated for the surge current required). Disconnect the TV from the mains for 5 minutes and then reconnect. Repeat a few times as required. Check the main PCB around the CRT driver connections and and on the CRT connection pcb for dry joints and cracked tracks etc. Especially where things have got warm. Just lookout for the volts! RP On 25 February 2010 18:37, Justin Richards wrot= e: > Thats great news. > > So I plan to short the braided earth strap to the metal clip under the > rubber cup attached to the tube using a aligator clip, piece of wire > and a screwdriver with a good insulated handle. =A0Then remove the cup > and connect it direct to ground braid and metal clip before I bring my > earthed soldering iron in for the kill. > > Then I plan to remove the mz73g which looks like a thermistor and > replace with an equivalent. > > The Circuit Brd where this is mounted looks a bit heat stressed. > > Does this sound good. > > Any other tips. > > Oh, yeah it has been disconnected for a while now. =A0But I know they > can still hold a nasty charge. > > Cheers Justin > > On 25 February 2010 12:53, Roger Weichert wrote: >> At last, something I can help with. >> >> IMHO there's a 99.95% chance that David is right =A0... so there's no ne= ed to >> overdiagnose the problem. >> >> In over 35 years of servicing, I've not once ... not even once, needed to >> replace a degaussing coil. >> >> I'd recomend fiiting a new degaussing thermistor (PTC) >> >> I haven't seen a lot of TCL's but out of perhaps 10 I've seen, 8 needed a >> thermistor to solve their purity error and the other 2 had power supply >> faults. >> >> Justin, if you leave it too much longer it will pop the mains fuse (usua= lly >> at switch on), and then you'll need a fuse and a thermistor. Doesn't usu= ally >> do any more damage =A0... =A0if you're lucky! >> >> Regards, =A0Roger >> >> >> >>>From: "David Duffy >> >> >>> Possibly needs the degaussing PTC replaced. >>> >>> Justin Richards wrote: >>>> Our relatively new TCL CRT television has it colours all messed up. >>>> >>>> Black is Black >>>> White is White >>>> Red is Blue >>>> Green is Red >>>> Blue is Green. >>>> >>>> It also seems to be suffering deguassing issues >>>> >>>> Anyone have any suggestions. >>>> >>>> Cheers Justin >> >> >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist