Re: Hyundai l50s - dead
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Last edited by stj; 08-17-2014, 02:35 PM. -
Re: Hyundai l50s - dead
Yes - that looks better eh? - Can you test the other pins. I see there is a ground on the iC use that if it is any easier.
Near the white label tucked under a link wire there is a transistor on 3 thin legs
I think this is a reference transistor can you read the part number.
Something else to try - connect it all up lamps as well then remove the connector that goes from the main to the panel - may come on with white screen - when switched onLast edited by selldoor; 08-17-2014, 04:02 PM.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Hyundai l50s - dead
Yes, the transistor/IC is a TL431-A335
On ICE2AS01 usin pin 7 as ground, I get the following voltages. "f" means the voltage fluctuates between the values, every second or so.
1 0
2 f 0 - 1.3
3 f 0 - 2.5
4 0
5 f 0 - 0.5
6 f 9.5 - 13
8 0
Tried the test with lamps connected, then removed connector from main to panel, but still no life from it.Comment
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Re: Hyundai l50s - dead
Ok not sure if they are good or not! can you test the TL431
- see here
Also check the voltage on it and D104 relative to chassis ground(secondary)Last edited by selldoor; 08-18-2014, 04:33 AM.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Hyundai l50s - dead
It can be that the loads drawing too much current so the SMPS is in the shutdown-startup loop.
Check the rectifiers for the 5V and the 12V circuits, then you can disconnect the 12V feeding the inverter section to take the load away.Last edited by budm; 08-18-2014, 08:53 AM.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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Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
Hi everyone,
I have a NM-A321 board that is dead, with no power at all.
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- +5VAUX
- 1.2VSUS_PWRGD
- 3VALW_PGD
- 1.05VAUX_PWRGD
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