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Pete, Electronic Engineer
Category: TV
Satisfied Customers: 17283
Experience:  Over 16 years of experience installing and repairing electronics.
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Wont power up. TV light comes on 5 secs then powers down. No

Customer Question

Wont power up. TV green light comes on for about 5 secs then powers down. No video, no sound.
Replaced power, logic and main boards. Checked voltages going to Y sustain and Z sustain...seem to be fine if Im checking it right.
Submitted: 1 year ago.
Category: TV
Expert:  Pete replied 1 year ago.

Hi there

Customer: replied 1 year ago.
Customer: replied 1 year ago.
You here?
Expert:  Pete replied 1 year ago.

Thanks for getting back to me.

Do you have any circuit diagrams or schematics available?

Does the TV power on ok if the Y-SUS and Z-SUS boards are disconnected?

Customer: replied 1 year ago.
No difference if the y and z sus are disconnected. The schematic I have is 7mb ...too large to upload here. Take a look at page 9 with the power failure circuit. Even tho I have replaced the main board already.
Let me know if I can upload to a dropbox or email the file to you.
Expert:  Pete replied 1 year ago.

Ok, let me check if the other experts have any idea on this...

Customer: replied 1 year ago.
Any help on this matter?