I have no power up and inverter board not lighting. TV has power through wires going to main board I have correct voltages. I don't have the 24 v on the plug going from PS to inverter board. Any ideas.
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Rca 32inch l32wd22 no power up no inverter light.
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Re: Rca 32inch l32wd22 no power up no inverter light.
You need to verify if the inverter board is getting the bl_on signal (>3vdc).
Read basic troubleshooting guide at the link below.
Upload good clear pictures of the board using attachment function.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Rca 32inch l32wd22 no power up no inverter light.
Do you have 5V, 12V, PSON? Pictures of chassis?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
Hard to help without seeing the pictures of what we are trying to fix.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Rca 32inch l32wd22 no power up no inverter light.
You think you saw 24V? Go back and check for sure. We do not want to follow a wild goose...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
If you check the voltage at the two pins of the large black filter caps (rated at 450VDC) when TV is plugged in but not turn on, it should have about 160VDC on the legs, when you turn on the TV, the voltage should go up to around 380VDC, if it does then the PS_ON signal is good. Br careful since you are working in the HOT side of the circuits, do not touch any part of that section with your hands.
Please make sure your pictures are in focus, it is hard to troubleshoot the boards with bad pictures.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Rca 32inch l32wd22 no power up no inverter light.
So you have 15V, 12V, 5V, but no 24V? That does not sound right at all... Unless that main transformer is for 24V and nothing else, that's possible I suppose.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
Can we see a pic of bottom of the PSU?
Also do Budm's suggested check of the big cap voltage.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
This suggests PSON is not changing or there is a fault with the control portion of the PSU.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
Don't know yet, things like optocouplers for passing the signal across, to be honest, quite rare compared to PSON/main board fault.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Rca 32inch l32wd22 no power up no inverter light.
All right i have double checked i got 5, 12, 14.9 v on power supply, i got
5v standby , 12v, at main board, but when i press the power on i hear nothing and the voltage on the plug to invertor board is non existent. Could i have a main board problem instead of power supply issue.
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