Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: zeko on March 24, 2014,07:49:25
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Hello,
Samsung LE32C530F1W power supply is OK, the error is on the Main AV-Board BN94-02616H (BN41-01331B).
The A5V of power supply is OK ... all other voltage is missing. If I disconnect from the motherboard connector then inverter operates (the screen is bright).
Control panel is without function and LED is not lit, device no start and does not respond to the remote control .. is as dead.
The error is well known, only what is broken on the Main AV-Board?
See here:
http://www.ebay.co.uk/itm/BN41-01331B-Samsung-main-board-repair-service-/161255242389?pt=UK_Sound_Vision_TV_Boards_Parts&hash=item258b8fba95 (http://www.ebay.co.uk/itm/BN41-01331B-Samsung-main-board-repair-service-/161255242389?pt=UK_Sound_Vision_TV_Boards_Parts&hash=item258b8fba95)
"Hi,
This listing is a board repair service to Samsung AV board numbered BN41- 01331B used in various LCD Samsung TVs. These boards are in both blue and green colours (see the picture)
The symptom of the fault is the set is dead and there is no light in the front, although there is 5V standby from power supply. If you pull out the connector between power supply and the main board backlights will come on.
You would need to post your faulty board to me.
I will fix it and return on the same day by recorded delivery. Any questions prior posting your faulty board-please don't hesitate to contact me. We are professional TVrepair service, and we are located inBelfast, Northern Ireland."
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Hello, where are service manual for Main AV-Board BN94-02616H (BN41-01331B)?
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Chassis N82A
http://elektrotanya.com/samsung_le37c550j1w_xxh_n82a_chassis.rar/download.html
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Thanks @ jordan, but no detailed service manual of main board.
You can give me a advice what to test?
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Make a
Blind factory reset first
Press "EXIT" button for 12 seconds (15 is better since you cannot see TV),
then press "Left" and "Enter"
nothing
check ic402
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Hello,
by Blind factory reset same error remained.
IC402:
on pin 1,2,3 is no voltage
pin 2,7,8 = 3.3V
pin 5 = 0.9V
pin 6 = 1.5V
If Firmware or IC402 error has is Red LED power light flashes and at my Samsung LCD-TV RED LED power is without light??????
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If ic402 is bad there is no red led.
If eeprom is corrupt it could be diffrent failure.
Depending of which part of the eeprom that is bad, it could give you
blinking led, only red led stby, only backlight.
Pin 2 of ic402 3.3 V ?
Time for eeprom reset ?
http://wiki.samygo.tv/index.php5/UnBricking_TV_by_EEPROM_Reset#LExxC550.2F530
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Hello,
yes at pin 2 IC402 I measure 3.3V.
Is correct 1.8V to 2.2V????
What happens if I reset eeprom IC501? He is then empty ? Did I understand correctly should IC501 reset and no IC402?
After the reset is setting given?
How do I make exactly eeprom reset, pin 4,5,6 bridge and then turn on TV (how long)?
Can I write this firmware on the eeprom IC402?
http://elektrotanya.com/samsung_le32c530f1w_bn94-02616h_bn4_firmware.rar/download.html
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must be given the same standby on IC501 be 3.3V??
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Bridge pin 4 and 5 ic501 only ic501
Wait 20 sek. then open the bridge and close the TV off
if you are lucky then the eeprom is loaded with defaults values
and should start if it was eeprom that was making the problem.
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Hi, it is normal that the mainboard at chip DC-DC IC204 (AOZ1021HAI) pin 7 and pin 8 (LX-VOUT) with GND has 17 Ohm? It comes out no voltage. At pin 2 (VIN) 5.2V is ok.
Is it normal or pin 7 and pin 8 has short circuit?
Where there service manual????
Best Regards.