Phillips 47PFL3603D/F7 No Power

[Gorrillasnot]

Re: Phillips 47PFL3603D/F7 No Power

Calling it a day is exactly what I did. Everything is put back together.

$20 TV + $40ish in parts+ the learning experience = A whole lotta fun.

I will let this thread die now.

Thanks again guys...I really appreciate all the guidance.

[Mr repair]

Re: Phillips 47PFL3603D/F7 No Power

looking for a print on this power supply

[Gorrillasnot]

Re: Phillips 47PFL3603D/F7 No Power

I never could find a schematic for that PSU board.
I ended up buying a repair kit from shopjimmy which included the board locations of the parts, and tested and replaced only the components that were bad.

sorry I couldn't be of more help.
maybe someone more experienced can point you to where you can find a schematic.

[outfieldseven7]

Re: Phillips 47PFL3603D/F7 No Power

Terryfictv, thank you very much for the cap location info.
R5 is 120 ohms and 5% tolerance.

Something that caught my eye when looking at the board today is the film cap located at C700 looks damaged.
Does anyone know where I could find a replacement?
The original is marked Pilkor, 384MKP, 220n J 630v, wk 08 43.
Digikey chat said they didn't have any box shaped ones but did have a axial lead http://www.digikey.com/product-searc...=0&pageSize=25 that might work, but I would need to check the data sheets.

I am in over my head a little when it comes to data sheets..do u think the digikey part would work?

attached is a pic of my possibly bad C700 cap.

thanks

I am fixing my board could you tell mne the wattage of R5?

[Gorrillasnot]

Re: Phillips 47PFL3603D/F7 No Power

I cant seem to find any specs in my notes on r5.
Sorry I couldn't be any help.

Merry Christmas

[budm]

Re: Phillips 47PFL3603D/F7 No Power

R5 looks to be 1/2~3/4W MOX (Metal Oxide) Flame proof resistor. You can measure the dimensions and match it to the replacement.

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

Quick question if I may. My Philips 47", 47PFL3603D/F7 was purchased used and broken. The set was dead. Opened it up and found a burned connection on the board where the transformer has been a problem on many other TV sets. I repaired the connection no problem. I also noticed two small caps beginning to bulge.(C-108 & C-112) I replaced them, but with 85 degree rated that I had in old stock. I plugged the TV in and it worked. After watching for a short time I noticed the picture began to intermittently stretch out past the bottom of the viewing area resulting in a distorted picture. I have no schematic on this set and was wondering if either of the caps I replaced are in the vertical circuit? I have ordered the correct caps and was also wondering if I should replace any of the others even they appear ok. (no signs of bulging) I have opened the set back up and see no signs of damage to the two caps that I had replaced or any others. I will wait until I get the 2 correct caps in before powering up again.
Thanks for any help/advise.
Greg Fox

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

I am also looking for a schematic for the Philips: 47PFL3603D/F7 Specifically the power supply board show information on C-108 & C-112 and if they are in the vertical circuit.
Thanks,
Greg

[budm]

Re: Phillips 47PFL3603D/F7 No Power

'I also noticed two small caps beginning to bulge.(C-108 & C-112)' On which board?

Is this your power supply board?
http://www.shopjimmy.com/philips-272...upply-unit.htm

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

Yes the two caps I replaced are on the power supply board you identified. Hopefully when I get the correct caps in, this vertical/stretching will go away. They are located on the right side a little over half way up, just above the small transformer and just below the wiring harness plug.
Yours thoughts?
Greg

[budm]

Re: Phillips 47PFL3603D/F7 No Power

C-108 & C-112 are filter caps for the 3.3V STBY power supply, they are not the cause of the pictures problem.
Do you have screen shot of what the pictures look like? It sounds like bad panel.
Philips 272217100571 (2300KEG033A-F) Power Supply Unit.
Pictures provided by shopjimmy.

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

Well, as you predicted the 2 new replacement caps did not fix the vertical deflection issue.(they were bulging) I'm an old school TV tech.(mid 80's) In those days I'd be using a can of freeze spray or a heat gun on electrolytic cap. or output transistors to isolate a intermittent problem. Is does appear to act up after the set has been on for while. Any idea where the vertical deflection circuit is located on the board/TV? I did talk to shopjimmy but they had no information about what circuits their kit components are located in.

[budm]

Re: Phillips 47PFL3603D/F7 No Power

'I'm an old school TV tech.(mid 80's) In those days I'd be using a can of freeze spray or a heat gun on electrolytic cap.' We use that method here at Badcaps to locate bad caps with high ESR. I am from the earlier 70 and repaired lots of tubes based TV and equipments.
It is LCD TV so there is no Horiz/Vetrical YOKE and drive circuit like CRT TV.
Screen shot of the image on the screen?

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

Well it's nice to meet an old tech. My dad and I opened a shop in the 70's. Mostly tube work back then. 6JE6 &6DW4 were a hot item. SO I know now that you understand my description of the problem. It did occur to me that it might not even be called a vertical deflection problem now a days. Sorry, I don't know what "ESR" is or means.

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

I have taken pics of the problem, but getting them on here is another issue.

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

When normally watching a movie there will be a blacked out area above and below the picture. After warming up the picture will stretch out beyond the bottom of the blacked out area at the bottom. And later the top part of the picture will do the same thing. This leaves no blacked out areas on the screen and elongated images. Similar to the old verticle fold over issues we used to experience in the old days.

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power






Well, I had to get my daughter to walk me through process to load
pictures.
Hopefully this will work? Three images:
one shows the correct image(black band,border at the top and bottom of the screen)
two shows bottom black band gone(image goes all the way to the screen bottom)
three shows bottom and top black band gone(picture fills entire screen)
It occurs to me that perhaps this could be a problem in the ZOOM circuit and not a vertical issue?
Can you tell me what T-701(the one that usually smokes) does in the circuit?

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

sorry here is the No. 2 pic

[firefighterfox]

Re: Phillips 47PFL3603D/F7 No Power

and here is No. 3

[budm]

Re: Phillips 47PFL3603D/F7 No Power

T701 is inverter transformer that crates high Voltage (1500~2000V) to light up the CCFL's (Cold Cathode Fluorescent Lamp) inside the LCD panel for the light source.
The LCD TV has pictures aspect ratio setting mode, normal, full (fill), zoom 1, zoom 2, etc.