Ok so im new at fixing lcd tv's i just received a rca 32 inch lcd tv what it does it turns on i can see the back light on and then 5 seconds later it shuts off back into stand by mode ive opened it up but see no caps bulging or blown so what could it be inverter board or power board or tuner board the model is rlc3273a-b
RCA 32 lcd tv
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Re: Need help with rca 32 lcd tv
I'd suggest a mod move this to the TV forum.
A good start is to let us know what equipment you have: soldering iron, digital multimeter, etc.
Second step is to post pictures, clear and in focus, of the TV's boards and one of the overall layout. Pictures up to 2000x2000 are supported; keep them around that size so we can clearly see the layout and the components.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. -
Re: Need help with rca 32 lcd tv
sorry for posting in wrong forum and yes i do have a multimeter and soldering gun magnafineglass and such here are some pics i hope it helps
model for power board cv318h-x
model for tuner board mp116a rev 1.0
model for inverter board v327-101 made by darfonLast edited by nelfig; 01-09-2013, 12:31 PM.Comment
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Re: Need help with rca 32 lcd tv
OK, do you see a pin marked 24V on the power supply?
Check the voltage here, using DC200V, black probe on chassis, red probe in pin area.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.Comment
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Re: Need help with rca 32 lcd tv
Your meter needs to be set to DC volts, not AC volts.
If reading is still high replace meter battery.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.Comment
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Re: Need help with rca 32 lcd tv
That would be a possible suspect. Is there a pin marked ON/OFF, BLON or BLON/OFF on the power supply?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.Comment
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Re: RCA 32 lcd tv
OK, that is unrelated for now. PSU is switched on (PSON) because 24V is present. Can we have a close picture of the inverter board?Last edited by tom66; 01-10-2013, 01:48 PM.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.Comment
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Re: RCA 32 lcd tv
Please post a good closed up pictures of the area around the white connector (the one that the 24v from power supply is connected to) on the inverter board. Darfon!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=24809Comment
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Re: RCA 32 lcd tv
OK, thanks for the pictures, but please edit the post and use GO ADVANCED, MANAGE ATTACHMENT to up load the pictures instead of posting them in line which takes a long time to display the pictures.
If you look to the right of that multi-pin connector on the inverter board, there are printings that show the pin outs of the connector, check the DC voltage between the BL_ON pin and the chassis ground to see if you still have >3VDC when the screen black out.
See if this PANASONIC has the same dimensions:
http://www.digikey.com/product-detai...0759-ND/285441
Digikey does not have it in stock but you can check other place like MOUSER.Last edited by budm; 01-10-2013, 03:05 PM.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=24809Comment
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Re: RCA 32 lcd tv
OK, so when the backlights go out, the required voltage (24VDC) is present, the turn on command (BL_ON) is also present, but the lamps still go into shutdown. Then you need to look at the inverter board.
1) Check all the fuses (Fx) using 200 Ohm scale, they should show less than 1 Ohm.
2) I would check the transformer secondary high voltage winding of all the transformers to see if they are all within 3% of each other.
P/ as printed on the inverter transformer?
Notes: also check pin 14 (??? PWM) to see what you have.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=24809Comment
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Re: RCA 32 lcd tv
OK, so when the backlights go out, the required voltage (24VDC) is present, the turn on command (BL_ON) is also present, but the lamps still go into shutdown. Then you need to look at the inverter board.
1) Check all the fuses (Fx) using 200 Ohm scale, they should show less than 1 Ohm.
2) I would check the transformer secondary high voltage winding of all the transformers to see if they are all within 3% of each other.
P/ as printed on the inverter transformer?
Notes: also check pin 14 (??? PWM) to see what you have.Comment
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