20 Most Recent Philips 42PF9630A 42 in. Plasma Television - Page 9 Questions & Answers

Power supply issue, it can be solved by adjusting a preset on the p/s have a tech do it, Julio [email protected]

hi..
I had same problem....Its fixed now working great....had 2 blown capacitors.Cost me two bucks and about an hour to fix.Look at the capacitors on the main power supply they should be flat..

thank u
rate me

The most commom causes are One. There ia a stuck button on the tv itself. The Menu button. The membrane switch or the TACT switch is bad and needs to be replaced. The Main bd can also be bad.

There is a problem with the power supply. I'm not at work so I don't have the schematic's at hand to guide you.
But I do have an interesting solution: If you look at the power supply unit, you'll find that some of the capacitors are from "Rubicon" . That's the brand of the capacitors.

IMHO: just replace all "rubicon" capacitors and I believe you problem is solved...

Interesting he...?!
It might seem to be "al long shot" but it actually isn't !!
The little power suplly that causes this problem has this "rubicon elco's" as rectifier capacitance. that's what is causing the problem. The few capacitors of the same brand that are not actualy causing the problem ( about 6 pieces) should be replaced anyway in order to avoid problems in the near future. So just replace all "rubicon" elco's on the power supply is repairing the problem and resolve problems for the future to....

The mainboard is damaged.

you could have bad capasitors in power supply

I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsung. Know to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio conections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Link to a photo of the PCB. Make a note of the location of all cable connections then unplug them all. Un-install PCB, Check a Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.

I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsun. Know to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio conections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Link to a photo of the PCB. Make a note of the location of all cable connections then unplug them all. Un-install PCB, Check a Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.

We have the same problem with out TV. Apparently the problem is the drivers.

there is internal failure inside..

Is the light flashing?

Is the light blinking 7 times on front of TV ? If u take the back cover of the TV off you should see two leds on the bottom right of power supply turn on when u push the power button. When the TV go into error protection on the upper left of power supply you should see. A blinking green light. Please inform me of the error it flashes and ill will be able to help further. ( Serveral possiblilties it could be from audio, bad power,and faulty Y-main.)

I wanted to share my solution to this problem. Not only is it an easy fix (aside from taking the tv apart) but it also explains some of the strange methods I've read that have worked, such as taking out padding from behind the boards or putting a magazine under one side and even tapping on the tv for a temporary fix.

Granted its only been a few days of it working but I tell you this....It's not done the half black screen once! And trust me when I say it was doing it constantly.

Ok so first off the problem definitely lies in the upper/lower buffer boards. On the model mentioned by the OP (same model I have) it's located on the same side as the power button (right side when you are looking at the tv).

Ok so you've got the tv openned face down on a non static surface. Btw I was shocked at how many youtube videos I found of ppl working on their tvs while its laid flat on their sofas!

When you are looking into it you will see on one side there are two vertical boards hooked up to another board more towards the center. These two boards are your upper and lower boards that provide the upper and lower picture. The problem I was having was in the lower section of the tv going black so obviously that corresponded to the lower board. (They are labelled upper and lower if you look closely)
So here is what I did:

I noticed the lower board was not sitting flush so I unscrewed the one screw on the bottom and noticed how much of a gap was in the screw hole. The problem was it was screwed down in such a way that one of the connections going to the main board was not making it's proper connection. So I just gave it a little push towards the center, held it, and screwed it back down.

That's it! It's fixed now. No need for replacing anything. Just poorly drilled holes and a few things not lining up correctly!

So hopefully anyone else that's having this same problem might have some luck in using this fix. Good Luck!

Yep, its a gonner. If you want to fix it yourself you can save several hundred bucks, but it will still cost you about $400 to do yourself, depending on the problem of course. This set and its samsung counterpart are horribly plagued by faulty ysus buffers. If you wan't to try and fix it, comment again and I'll walk you through the diagnosis process. Its a bit lengthy, I'll prewarn you.

All of these problems are related except the channel changing one. That a weird one. the rest sound like your y-buffers are on the way out. This set is plagued with a bad buffer design. Looking at the tv with the back off, the boards on the far left, the two long skinny ones, and the larger one they are attatched to are what needs to be replaced. The cheapest place to get these replaced/fixed is on ebay. There is a seller named superdog** something or another. He's done two sets of these boards for me and does a fine job with really quick turnaround times. Tell him captain_axle sent you. Good luck

Bottom left button on your remote should turn the light on and off. if this doesn't work sort through the options on remote and select ambiant light functions

Have then give you the Correct Part Name and Part Number, I will do the rest.

4 blink error for that model is i2c communication failure specific to ssb (small signal board) if intermittent should upgrade firmware to newest firmware and if constant would need to replace small signal board

Hi kellar6263,

Try unplugging the TV from the wall for about 15 seconds. Then plug it and see if it works. There are more troubleshooting tips that are beyond the scope of what I can write out on FixYa (like upgrading the firmware on your TV using the USB port) but you can check out the Support Page for your Television.

Best of Luck
Jordan