1. Home
  2. Electronics Repair
  3. Projection Screen no longer displays image after showing blue screen

Projection Screen no longer displays image after showing blue screen

Hey guys, Ive got a 50" mitsubishi VS-50603(I believe thats the model #.. aint at home now) projection screen tv which recently would sometimes boot up display a mostly blue screen.(other colors were showing just it was 90% blue dominant) Once the tv was powered off for a second or two and turned back on the blue screen would go away. Then just the other day the tv stop displaying an image at all upon turn-on. I opened up the back and found no blown fuses(checked all 3 of them) and noticed that the crt heaters are not lighting up as well. When I press the power button the tv makes the "click" sound as if its about to turn on but stops there. When I power it off I hear a high pitched "draining" sound which seems to be coming around the flyback though I cant say for certain. Anyone know what could have gone wrong and where I should start to troubleshoot? Thanks!

Reply to
Raventy
Loading thread data ...

from what you discribe it sounds like you have an intermitant shorted blue crt, and each time it short it puts a strain on the hv circuit, and finally has blown the hot transitor if it is an old set you should replace all three tubes that gets expensive might want to look at new tvs

Reply to
David Naylor

Whoa, slow down a bit, start with the simple stuff first, cracked solder joints and such, they cause many intermittant problems.

Reply to
James Sweet

The first thing to look for in a VS50603 is a coolant leak. By far the most common problme in this model.

Leonard

-------------------------------------------------------------------------------- I am using the free version of SPAMfighter for private users. It has removed 12647 spam emails to date. Paying users do not have this message in their emails. Try SPAMfighter for free now!

Reply to
Leonard Caillouet

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.