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SAMSUNG LE32S73BDX/XEU Flashing RED LED
jimca007:
I don't suppose you can say anything's 100 % risk free but since that procedure to override the lamp out error is in the manufacturers service manual I gotta assume they believe it to be fairly risk free as for the eeprom I believe it only resets the variables ie back to factory settings it doesnt actually wipe the chip
michael first:
hi,do you have +24v for the inverter?if missing,replace F9222L i.c. usually defective.
markie76:
--- Quote from: michael first on September 05, 2011,05:28:57 ---hi,do you have +24v for the inverter?if missing,replace F9222L i.c. usually defective.
--- End quote ---
Thx for your post. I know its been a while but only just got round to this again.
Should I expect it to be trying to send power to the inverter if it is in red flashing LED state?
E Parton:
Hi Markie ..
I usually fit a new blank eprom ...which is written after fitting and powering up for the first time after its replaced ..
Also ..if I run out of new blanks ..I've found removing the eprom and flashing it full of FFs.. ie... erasing it ..(after I've read its contents of course ..always handy to have a backup plan)...is an effective alternative ..
Never done this yet on a 32 inch ...but many times on its big brother 42inch LCDs
rgds
markie76:
UPDATE
1. I tried shorting pins 2 and 4 of the main board connector CN1101 - didn't seem to have any effect, when it was powered on the red LED just flashed same as before.
2. I connected pins 5 & 6 together of the eeprom, then plugged it in, the red LED flashed quickly (3-4 times a second) I counted to 10, powered down, removed the connection and plugged in, the red LED flashed as before and nothing else happened.
3. I measured the 24v outputs to the inverter and they fluctuated between 2.45v to 3.2v
When powered on and the red LED is flashing if you get close to the PSU you can hear buzzing and very feint clicks sort of in time with the LED flashes - but you have to be close (5cm) and they are feint buzzes & clicks.
What shall I try next? Can I do any tests to check the F9222L?
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