Question about Philips 60P8341 60" Rear Projection Television
We installed a new PTV small signal board to solve a power problem, but we have no blue convergence. The blue cross simply is not there although the blue tube is lit. It is not focusing. When I look into the blue CRT it is just diffuse blue light. We replaced the IC7003 per Philips recommendation but that did not help. We crossed over the focus leads from another color but no change to blue. Do you have a suggestion?
See if the leads from the green crt Pcb on the green crt is long enough to reach the blue crt. If you hook up the working green circuit to the blue tube and it still dosent light up On the screen, then you know the tube is bad. Just a quick way to test crt's,. If it does light up then you have to trouble shoot the matrix for the blue tube. The drive maynot be vorrct the g2 voltage maybe not enough so then the screen block could be bad. I just wanna warn you against the very very high voltage inside these sets even when there not plugged in. BE CAREFULL PLEASE
Posted on Jun 14, 2006
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Posted on Jan 02, 2017
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