Philips 50pfp5532d goes into standby after about 1 minute

[LesWoollam]

I have a Philips 50pfp5532d plasma TV which powers-up fine, then after about 1 minute goes into standby (red light). I can switch it on again no problem and get another 1 minute before it again goes into standby.
No bulging caps on the SMPS board.
If I unplug the x sus and y sus boards the fault still remains.
Any help would be most welcome.

[CapLeaker]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Had a similar problem on a Panasonic Plasma TV a long time ago. Turned out to be the main board. One of the HDMI switching IC’s was bad causing the TV to turn off and neither any of the HDMI ports worked. I could vary the time by freezing and heating that IC. I am not saying it is the same IC on your board, but it is very well possible for the main board to pull off a trick like that.

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

You need to check your voltages and see if any of them are dropping out. Some photo's of the boards could be useful.
The following video appears to indicate there is a small circuit board with a led giving a fault code that may also be on your set.
https://www.youtube.com/watch?v=hP5NsFR9a-Y

[LesWoollam]

Re: Philips 50pfp5532d goes into standby after about 1 minute

The green LED on the SMPS board is on and steady at all times and exhibits no fault codes.
The TV will occasionally stay on for up to 10 minutes, other times only a matter of a few seconds before it shuts down. A few times it has gone into standby mode then turned itself on again(!).
I've noticed that the 12v rail is sitting at 13.5v; is that relevant/critical?

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Do you have photo's of your circuit boards in which you can clearly see the silkscreen legends.

[LesWoollam]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Many thanks for the offers of help.
I eventually managed to get the TV back up & running, but not the way I would have liked.
Unfortunately, I couldn't find a schematic to the SMPS, so ended-up swapping all the output voltage capacitors (C8030/C8031/C8046/C8051/C8042/C8084/C8052/C8047).
None of the capacitors showed any visible signs of failing, but obviously at least one was leaking.
If anyone has a schematic to the SMPS I would be very interested for when it fails again!

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

What was the power supply board number?

[LesWoollam]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Samsung PS-506-PH

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Will look to see what I can find

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

.

[LesWoollam]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Many thanks, it would be really useful if you manage to locate a schematic. Fingers crossed!

[dick_barton]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Try the following site> If you download it perhaps you can post it here.

https://www.academia.edu/34307039/Ph...-PA_50PFP5532D

[diif]

Re: Philips 50pfp5532d goes into standby after about 1 minute

I've uploaded the service manual here.

[LesWoollam]

Re: Philips 50pfp5532d goes into standby after about 1 minute

Many thanks for the service manual. Maybe I'm missing something, but I can't find a schematic of the SMPS in there.