I have replaced the power board, FMT board and had the DM board repaired. This corrected the blinking green light but now sits at the green solid light with no errors indicated.... but also no picture. Looking for what to check next or how to isolate the problem further?
Check and recheck that all connections are secure. Look on the circuit boards to see if anything looks wet. That would be fluid leaking from one of the tubes. One of the parts you put in may have issues. Check your voltages.
I have checked the circuit boards and connections again. How and where would I check the voltages? Are there specific test points?
There is a common failure of a regulator IC on the main board (I believe it is 9VDC). Everything will power up, but you will have a blue screen with no image. When you turn it on, you should also hear a static sound indicating the high voltage and horizontal output circuit are working. If the screen is blank/black then you may have a connector loose that goes to the picture tubes. Last but not least, somewhere along the way, a repair was done without actually knowing whether or not it was a "good" fix.
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I have checked the circuit boards and connections again. How and where would I check the voltages? Are there specific test points?
As a test, I connected a DVI montitor to the output from the FMT board but got no signal so assume that it's still something in the chassis that is not working. Although not sure that i would see a standard DVI output from the FMT baord ....but just trying to isoalte where the problem could be.Anything that is more detailed as far as troubleshooting the circuit boards available?
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