PCB is same as listed on first page of this thread, I attached pictures. And also schematics of power supply.
Attached Files
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Re: eax64905001 No Pfc Help ?
Can you get us an image of the underside of the Pcb please ?Leave a comment:
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Re: eax64905001 No Pfc Help ?
S/c means short circuit if you upload a picture of the top and bottom of your power supply im sure we can pont them out too you unless reece knows the location number alreadyLeave a comment:
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Re: eax64905001 No Pfc Help ?
Check the 24v diode and the Led mosfet for S/C that could be pulling the 24v low.Leave a comment:
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Re: eax64905001 No Pfc Help ?
I have exactly same problem, voltage to backlight fluctoates between 11-20V. I replaced MAP3202 - but problem is the same ... can you help me to further diagnose fault?Hello,
I have got the same problem here- LG 32LN570R, but the board is the same tan the one mentioned in the comments above.
The PSU board is eax64905001 ver. 2.4
I can see the image on the display when I use torch , therefore the Backlight is not getting voltage I believe.
I have measured the voltage to backlight, which fluctuate between 11V -21V
Other voltages on PSU board seems to be right 3,3V , 3,47V , 12V and 24V.
Any ideas which part is causing this ?
Thanks for any help
Thanks in advance.Leave a comment:
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Re: eax64905001 No Pfc Help ?
Led driver Ic imo replace that. Video coming soon.Hello,
I have got the same problem here- LG 32LN570R, but the board is the same tan the one mentioned in the comments above.
The PSU board is eax64905001 ver. 2.4
I can see the image on the display when I use torch , therefore the Backlight is not getting voltage I believe.
I have measured the voltage to backlight, which fluctuate between 11V -21V
Other voltages on PSU board seems to be right 3,3V , 3,47V , 12V and 24V.
Any ideas which part is causing this ?
Thanks for any helpLast edited by ReeceyBurger123; 08-04-2016, 07:34 AM.Leave a comment:
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Re: eax64905001 No Pfc Help ?
Hello,
I have got the same problem here- LG 32LN570R, but the board is the same tan the one mentioned in the comments above.
The PSU board is eax64905001 ver. 2.4
I can see the image on the display when I use torch , therefore the Backlight is not getting voltage I believe.
I have measured the voltage to backlight, which fluctuate between 11V -21V
Other voltages on PSU board seems to be right 3,3V , 3,47V , 12V and 24V.
Any ideas which part is causing this ?
Thanks for any help
Leave a comment:
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Re: eax64905001 No Pfc Help ?
Ok have you checked any voltages yet ?Leave a comment:
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Re: eax64905001 No Pfc Help ?
3 blinking Leds on the standby Led ? If so thats normal, does the backlight not come on though ?Leave a comment:
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Re: eax64905001 No Pfc Help ?
yes it is the same powerboard just there is nothing about this board on the netLeave a comment:
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Re: eax64905001 No Pfc Help ?
hi sorry if I am posting wrong but need help what is the problem when you get the 3 blinking leds on powering upLeave a comment:
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Re: eax64905001 No Pfc Help ?
Just an update chaps, after replacing the Led driver I now have 1.4v Vcc to the mosfets and 70v on the output to the Leds and now have backlight Thanks all video coming soon.
Image of the replaced driver, unfortunately I lifted a trace so this thing doesn't look factory. Serves me right for not using flux !Attached FilesLeave a comment:
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Re: eax64905001 No Pfc Help ?
An update chaps, found the I have 0.8v Vcc coming out of the controller which is not high enough to turn on the booster. Got a controller on order
Leave a comment:
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Re: eax64905001 No Pfc Help ?
Will this schematic help you?
http://obrazki.elektroda.pl/1033688300_1436654733.jpgLeave a comment:
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Re: eax64905001 No Pfc Help ?
Check the Vin to that Boost inductor L801, when the boost is not on, the Vin will be = to Vout.Leave a comment:
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Re: eax64905001 No Pfc Help ?
Cheers bud, will download and have a play later on or tomorrow
Leave a comment:
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