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Does anyone know the number of the heat mounted transistor on the power board of philips 40pfl4707 tv

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Download the service manual to this set by internet. It will have all details.

Posted on Jan 17, 2013

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Posted on Jun 18, 2013

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Posted on Jan 02, 2017

SOURCE: TNPA4221 - Television won't turn on, fuses and transistors good

If TV is completely dead you have either a bad power or a bad main board.

Talking form experience I'd go with the power board first.

The alternative is to make sure the power board outputs the normal standby power to the main board and see that the main is not responding to command. That would point to the main.

The fact that Q406 is not shorted does not mean it is good let alone that the power board is good; while the most common issue there it is definitely not the only one that can happen.

You can send in the board for inspection/repair if interested although you're probably better off just buying a replacement.

Posted on Oct 09, 2012

SOURCE: plug in power cord on phillips 40pfl4707 and a/c fuse in tv blows

You have a short on the front end of your power supply board!

Posted on Jan 15, 2013

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1 Answer

Philips 40PFL4707 screen cracked


Nothing can be done, except replacing the screen with a new one. Contact the authorized service center for Philips.

Oct 25, 2013 | Philips 40PFL4707 40" 1080p LED-LCD TV -...

1 Answer

Plug in power cord on phillips 40pfl4707 and a/c fuse in tv blows


You have a short on the front end of your power supply board!

Jan 15, 2013 | Philips Televison & Video

1 Answer

Philip TV not on


when the power indicator light is not on then the problem is on the power supply section...did you check the fuse?what about the power cord check the continuity of it..check also the fusible resistors from the ac line leading to the filter capacitor...measure the presence of voltage from the filter capacitor...if you can read a high voltage from it try to replace the regulator transistor..it is mounted from a heat zink....replace it with the same number..

Mar 30, 2012 | Philips 32PFL3514D 32 in LCD TV

2 Answers

My tv fickers and shuts off ?


SYMPTOM:
Clicks and turns off after turning on set when cold. Have to turn on and off several times to work, or keep changing channels, right side of screen is black for a while.
PROBLEM: It is almost always a bad transistor and a bad capacitor. (about $0.70 in parts)
SOLUTION:
This repair is fairly straightforward. You will need a soldering iron, a solder ******, and a small torx bit. Unplug the set. Lay the TV on the floor, screen down. Remove the torx screws holding the rear cover on. There should be 10, (don’t forget the 2 by the input panel). You will see 2 circuit boards, the one of interest is the large one near the bottom of the set. This board has a retainer clip on each side that needs to be pulled out to allow the circuit board2.gif to slide out. Slide the board out about 5-6 inches. You might need to support the board so it doesn’t slide back down into the TV set. This circuit board should have numbers by each of the components. You want to look for 7461 (transistor) and 2455 (capacitor). They are located right next to each other near the center of the board. The transistor will usually overheat and discolor the circuit board immediately around it. Warm up the soldering iron and get the solder ****** ready. Heat up the solder joint while removing excess solder with the ******. Once the transistor and capacitor are free, check the numbers on each. The capacitor (round cylinder) should have “47uf” on it. The transistor should have “C33725” on it. You can order these parts from Digi-Key (google it) for about $2.50 including shipping if you use USPS option. The part numbers are: 493-1060-ND for the capacitor and BC33725-ND for the transistor. Once you get your parts, solder them in and check TV operation. It should work as it did before. This repair can be done by anyone familiar with a soldering iron in about 30-45 minutes their first time. Good Luck!!

Jun 28, 2009 | Philips 27PT543S 27" TV

1 Answer

Transistor lost.


if you are replacing 7402
also replace diode 6404 this diode even thou it test goo will in long term overheat 7404 and caus it to go bad by leakage.
and if 7402 gose bad it is regulating the 15v stanby volts that is 7412 is also going to be bad so replace 7412 also
now
the part numbers are:
7402 = # 932211676682

7412 =# 932210514682


thanks,
daniel.

Jan 13, 2009 | Philips 19PR19 19" TV

3 Answers

Unable to buy ''TA36N30p''


I've looked every where and I am unable to buy these transistors unless I want to buy 200 of them, what a joke, there are 3 options for these boards:
1. Buy 200 of these transistors
2. JVC sell a new version of this board for £50
3. Buy a fault TV on Ebay and take the parts from that.

I'm gonna go for option 3 then I will have loads of spare parts for any future problems.

Nov 25, 2008 | Philips Magnavox 27MS343S 27" TV

2 Answers

Horizontal output transistor


Most likely the transistor will be on the main board. It will also be mounted to a heatsink. The board you see mounted to the rear of the CRT is not associated with the horizontal and high voltage. Follow the high voltage wire attatched to the side of the CRT back to the flyback transformer. You should find the transistor near the transformer.

As for swapping them out: you can swap them out if both TV's are the same model number or if the transistors have the same part number. If not, I would not do it. You have to make sure that the specifications of the parts are identical otherwise you can damage the replacement part and possibly the TV.

Let me know if I can be of further assistance to you.

Good luck!
- Jim

Feb 12, 2008 | Televison & Video

4 Answers

TV Sings Like a Bird!


Phillips TV, 27”, model:27PT543S37A REPAIR…
SYMPTOM:
Clicks and turns off after turning on set when cold. Have to turn on and off several times to work, or keep changing channels, right side of screen is black for a while.
PROMLEM: It is almost always a bad transistor and a bad capacitor. (about $0.70 in parts)
SOLUTION:
This repair is fairly straightforward. You will need a soldering iron, a solder ******, and a small torx bit. Unplug the set. Lay the TV on the floor, screen down. Remove the torx screws holding the rear cover on. There should be 10, (don’t forget the 2 by the input panel). You will see 2 circuit boards, the one of interest is the large one near the bottom of the set. This board has a retainer clip on each side that needs to be pulled out to allow the circuit board to slide out. Slide the board out about 5-6 inches. You might need to support the board so it doesn’t slide back down into the TV set. This circuit board should have numbers by each of the components. You want to look for 7461 (transistor) and 2455 (capacitor). They are located right next to each other near the center of the board. The transistor will usually overheat and discolor the circuit board immediately around it. Warm up the soldering iron and get the solder ****** ready. Heat up the solder joint while removing excess solder with the ******. Once the transistor and capacitor are free, check the numbers on each. The capacitor (round cylinder) should have “47uf” on it. The transistor should have “C33725” on it. You can order these parts from Digi-Key (google it) for about $2.50 including shipping if you use USPS option. The part numbers are: 493-1060-ND for the capacitor and BC33725-ND for the transistor. Once you get your parts, solder them in and check TV operation. It should work as it did before. (Wouldn’t it be nice if these companies could focus on quality rather than saving $0.04 here and there??!!??). This repair can be done by anyone familiar with a soldering iron in about 30-45 minutes their first time. Good Luck!!

Mar 21, 2006 | Philips 27PT543S 27" TV

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