So on my power supply the main fuse isn't getting any power on either side and I traced it down to one of the resistors that lead to the fuse is bad. It's labeled EOLZ which I looked up as a end of line resistor. Anyone know where to get one. I couldn't find one on digikey or mouser. Also is there a specific resistor value for this.
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Re: End of line resistor for Westinghouse tx-42f430s
Here is a pict.Attached Files -
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Re: End of line resistor for Westinghouse tx-42f430s
OK, it's '2703' = 270K, they are connected in series due to the high voltage, it looks like they are for sampling the high voltage.
Pictures of the whole board both sides?
This will not be the problem of not getting power to the fuse.Last edited by budm; 05-30-2014, 09:07 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: End of line resistor for Westinghouse tx-42f430s
Well I hooked everything up and metered each side of all those resistors and the bottom side of the one in question read 40v then nothing on the other side. That's y I thought it was bad. But I don't know if anything else caused that to go bad.Comment
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Re: End of line resistor for Westinghouse tx-42f430s
1Attached FilesComment
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Re: End of line resistor for Westinghouse tx-42f430s
2Attached FilesComment
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Re: End of line resistor for Westinghouse tx-42f430s
3Attached FilesComment
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Re: End of line resistor for Westinghouse tx-42f430s
Will any 270k ohm resistor work. I might have one on a junk boardComment
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Re: End of line resistor for Westinghouse tx-42f430s
You will not have much on the other end because it made to drop the voltage way way down to feed the sensing circuits.
What is the power supply not doing? Any DC Voltage right at the two legs of the main filter cap?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: End of line resistor for Westinghouse tx-42f430s
Yea I got 337v at main cap. The tv has stand by but will not turn on. Has the 24v at the power supply. I don't know what it goes to looks like power inverter. Bl on has no voltage. Two green lights on main board light up. But at this fuse on the main board there is no power and no relays click even after plugin in power.Comment
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Re: End of line resistor for Westinghouse tx-42f430s
So you were saying because there is a short somewhere that's y I don't have power on the other side of that resistor. Cause it feeds after that resistor to the fuse, a yellow disc cap, a coil I don't know the correct term for and it looks like that's itComment
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Re: End of line resistor for Westinghouse tx-42f430s
It does lead to a big ic of some kind labeled GSIB 1560Comment
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Re: End of line resistor for Westinghouse tx-42f430s
That means the PFC Voltage booster is working, it may be on the low side. But it seems to me that the PS_ON signal is stuck on. The voltage on the cap should be around 165VDC when TV is plug in but not turned on, then it should jump up to 360VDC or more when power switch is activated which then the main board will send the PS_ON to turn on the PFC and the 24VDC power supply, after a few seconds (this is delayed time for the 24VDC to become stable before turning on the inverter circuit), the main board should send the BL_ON to turn on the inverter circuit.
So can you find the PS_ON pin on the power supply?
Also I do not see any relay on the power supply board.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: End of line resistor for Westinghouse tx-42f430s
Of course nothing is labeled on the connectors except bl on, v_iplm, v_eplm, v_sel. That's about it.Comment
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Re: End of line resistor for Westinghouse tx-42f430s
I can see the connector that goes into the main board from the power buttons and led. There are a few regulators next to it. I will see if I can get some voltagesComment
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Re: End of line resistor for Westinghouse tx-42f430s
OK, those resistors are for discharging that gray capacitor, you can see it is connected in parallel with that rectangular AC noise filter cap (next to the AC input connector) which is connected to the HOT (through the main AC fuse) and NEUTRAL.
If you measure the AC voltage between the two ends of the resistors string, you will see 120VAC, just remember one thing, when you work in the primary side, you cannot use chassis as the Ground ref point.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: End of line resistor for Westinghouse tx-42f430s
Main boardAttached FilesComment
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Re: End of line resistor for Westinghouse tx-42f430s
Is this the power supply board you have?
http://www.shopjimmy.com/westinghous...upply-unit.htm
And which one is the main board you have?
http://www.shopjimmy.com/catalogsear...use+tx-42f430s
OK, I figured out the boards you have.Last edited by budm; 05-30-2014, 10:10 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: End of line resistor for Westinghouse tx-42f430s
BTW, there are labels on the bottom side of the board, you can see the PSON pin there, you need to check the DC voltage on that pin.
Pictures provided by Shopjimmy.Attached FilesLast edited by budm; 05-30-2014, 10:15 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: End of line resistor for Westinghouse tx-42f430s
I'm gonna say this power supply. The model matches up but not the pcb no. But it has the same stickers in the same places u like the other power supply.
http://m.shopjimmy.com/westinghouse-...upply-unit.htm
Here is the main board.
http://m.shopjimmy.com/westinghouse-...2a-version.htmComment
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Hello guys
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