Original problem - Won't power up. Power led blinking 4 times. Called Sony for blink code troubleshooting, rep said it meant power supply problem to lamp or backlight (I did give her the correct model #), and she proceeded to direct me to the nearest authorized Sony tech. After work, I opened set and checked voltage at lamp power board - OK. Unplugged set and plugged back in. This time before shutdown, I saw an arc between R-6500 and lamp power cord plug on main PB. I bent the resistor away from the plug. Plugged set back in, now getting the 5 led blink code. Time to turn in. Next day got my hands on a service manual. It says the 4 blink code is a fan problem, NOT LAMP, and the 5 blink is lamp driver. Next day checked power again to lamp board, nothing. Nothing coming from main board either. Checked R-6500 and it was open. Replaced with .47ohm 1/2 fusible resistor and set back to normal finally. Iv'e never seen a resistor behave like that, but I don't do this for a living either. Couldn't believe I was misdirected by Sony rep on the blink code. Hope this repair tip helps someone else visiting this group. Thanks for the previous replies all. Until later........
- posted
13 years ago