Phillips 50PFP5532D/05 - PSU - LJ92-01511A

[StephenU]

Got the above to repair, took apart and someone has already been in and changed a few caps, when the TV is powered the with all boards connected you get a click from the relay and nothing apart from 2 red standby LED blinks followed by a pause for couple seconds then 2 blinks. On the PSU itself a small sub module to the lower right has a Green LED that blinks 3 times stops and then repeats over. Checked Va - NO voltage at all same with Vs, unplug Y-Main still the same outcome NO Va and NO Vs, unplug X-Main same. Unplug all connections to PSU (apart from power of course) and turn on and its the same as with all other boards connected NO Va or Vs, I take it there is still a problem with my PSU? Thanks for any help pointers in advance

Stephen

[ReeceyBurger123]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Ahh right we need photos and have you checked all the fuses on the psu checked the fuse between the main filter caps ? This is one of these crappy samsung sets with them horrid Y mains. Disconnect Y main and X Main and see if Va and Va come up.

[Andrew F. Ali]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Send pics of the backside of the TV with the back panel removed. Close up shots of each board also. and yes, as ReeceyBurger123 suggests: Disconnect X-Main and Y-Main boards and measure the Vs and Va voltages. Tell us what you get. Are you getting StdBy_5Vdc?

[flocko]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

This is a Samsung power board and the small board on the bottom with the green LED has at the side a silkscreen printed the fault code , you must have STby 5v for the relay to click. are you saying the relay comes in then drops out? you need to test this board out of the set with just the mains connected, if you jump PSon low to ground and see if the relay will stay in, then check low voltages if these are Ok move on and with a resistor (470-1000ohm ) connect VSon to 5v STby to make it high, this should bring the high VS voltage up. if any part of this test fails the fault will be shown by the amount of times the green LED flashes and can be checked with the fault code Flocko

[StephenU]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Ahh right we need photos and have you checked all the fuses on the psu checked the fuse between the main filter caps ? This is one of these crappy samsung sets with them horrid Y mains. Disconnect Y main and X Main and see if Va and Va come up.

Will grab some pics tonight, Yes indeed one of these sets Phillips with full Samsung guts and horrible Y-Main and buffer (Hoping these arent my issue here!)
I disconnected Y-Main NO Va or Vs disconnected X-Main NO Va or Vs, i'm pretty sure i checked all fuses and they were fine i will go over again tonight and add pictures in the morning, Thanks

[StephenU]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

This is a Samsung power board and the small board on the bottom with the green LED has at the side a silkscreen printed the fault code , you must have STby 5v for the relay to click. are you saying the relay comes in then drops out? you need to test this board out of the set with just the mains connected, if you jump PSon low to ground and see if the relay will stay in, then check low voltages if these are Ok move on and with a resistor (470-1000ohm ) connect VSon to 5v STby to make it high, this should bring the high VS voltage up. if any part of this test fails the fault will be shown by the amount of times the green LED flashes and can be checked with the fault code Flocko

I will try my best on this Flocko, Cheers for the input by the way.

[ReeceyBurger123]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Hmm as the fuses are good check if the mainboard is giving the Vs on signal if not the mainboard is your problem. Also if you decide to bridge the vs on signal if its missing very carefully check that Y main check all of the out put IBGTS for shorts and if any caps are blown. You dont want to kill that buffer haha nightmare to replace them scan Ics if they blow.

[StephenU]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Here are some pics of my PSU out the TV, i'm hoping to get back to the TV by the weekend when I have more time to get more pictures,and take more reading. With regards to the sub module LED fault code 3 blink - this seems too refer too 'Vg' on the silkscreen table (see pic)

Thanks in Advance to all.


Stephen

[flocko]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

put some good photos of the connectors and the screen printing so we can see how to help you. (bottom right of board ) The led 3 blink code Vg fault is of some help but not a lot. this is the first stage small volt side of the power board and comes up when PSon is made low (to ground), but will need to check all the other small voltages to see if they come up, if you can find a 470-1000 ohm resistor for later tests that would save time as well

[StephenU]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Here are some more pictures, thanks.

[dick_barton]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Found this on the net which could be useful

LJ92-01511A
Power Supply PCB
Use in
Philips 50PFP5332D/37
Common problem is the caps. Change any that are puffed on the end.
DC8104
DC8105
DC8107
DC8413
DC8414
They are 680uf 50v.
DC8013 1000uf 16v
DC8419 3300uf 10v
If you find other parts bad on this item please post


How to test PSU
https://www.youtube.com/watch?v=D0PPC9Pi0hc

[flocko]

Re: Phillips 50PFP5532D/05 - PSU - LJ92-01511A

Hi Dick Thanks for the youtube post , you have saved me having to run this all past Stephen. I would like to add this to it, when making VSon high connection to 5v use a resistor 470-1000 ohm as you are putting to higher voltage though it otherwise and can damage other parts. Also when checking, test for all the small voltages ,VG should be about 15v if I recall correctly. good luck and tell us what you find Flocko