Question about Philips 27PT6441 27" TV

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27pt6441/37 Thank You, The number next to the blown up chip is 7531 and its an 8 leg chip. Thanks again.

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This is a vertical chip. Call any electronics parts distributor and order part # TDA 7531. Theyn will know what you're talking about.

Posted on Mar 04, 2008

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TV will not turn back on and the standby light is blinking

if u pay attention the tv will after goes into shut down would go into dignoses mode , it would blink 6 - 7 times , stop and repeat againg 6-7 times this is high voltage power supply , the repair on this unit is very complicated but if u open this tv , look close tho the flyback transformer and next to it there is a small chip the part # start with (mz ) little black chip like i said is close to the flyback , it have like 8 leg on each side

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Sonykv-40xbr800 wont turn on

THe answer to this is that when you solder those 2 chips, you didn't solder them properly. You Probably have the silver soldering substance running down and overlaping some of the pins of those mcz3001 db chips. Make sure you solder each pin individually where it's just a silver dot that does not touch any other pin of those Mcz 3001 DB chips.

I realized this after i did the same thing as you did and saw that i didn't have 3 blinks until aftr i solder those same chips. Coming here and seeing you have the same problem as i did, i went back and changed what i did.

Originaly i only had 6 blinks and likewise i changed the MCA3001 DB chips.

I decided to go back and clean up the job i did and after doing a better job, i turned the tv back on and it came on with no problem. I hope this helps and i don't check here too often but you can email me at if youhave any question.
Thanks again and i got the answer to change those chips from here so thank you all who took the time to post this.

I am just a regular guy who has a KV-40XBR800 and wanted to see if this would fix my problem. Becareful solder those chips. Make sure the melted soldering silver wire does not touch any other pins of the Mcz3001 db.
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May 21, 2010 | Sony FD Trinitron WEGA XBRKV-40XBR800 40"...

1 Answer

No picture, but have sound

hi....Your micro chip is faulty check the voltage comming out of the 42nd leg it shuold be 13 volts dc if you are not getting that voltage replace the microchip.and the eeprom IC....
thank u rate me!!

Feb 14, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

No sound

NO Sound
First check to make sure there isn't a mute switch or switched to external speakers, then
use ohmmeter to measure the speaker resistance (3ohm to 30ohm is usual).

Now find the speaker wires, and follow them down to the pcb, and look for a chip with
7/8 legs then measure the voltage on all of its legs, you should get 8v to 20v on one pin and half of that on one of the others, the internal circuit of most chips is that of a push/pull output stage, with the output coming from the middle of the pair of transistors.
(if there is no chip then it will actually be a transistor push/pull pair).

If no voltage of at least 6v then look at the pcb from each leg of the chip, and look for an electrolytic cap to earth, thats the power line,
so follow it and look for a voltage regulator or straight from power stage (PSU),
and test if voltage there.

check for fusible resistors and power diode and smoothing cap.

If voltages are ok, then when your meter (other probe hanging loose) probe touches the input pin ,a buzz from speaker should sound, if not then change chip.

if buzz occurs then your looking for the SIF chip,
so look for a three legged Xtal filter with 6mhz (5.5mhz europe) thats the chip.

Is the eeprom/micro pro set to a different country sound system ?
Is the mute line on ? micro pro control
Is the speaker switch set to internal ?
Is there power to the output chip ?
is there at least one pin (on the o/p chip)with about half the power voltage ?
Is there power to the sif chip (12v) ?
Is the tv from another country (different xtals) ?

Hope this may help you;


Sep 21, 2008 | Toshiba 32AF42 32" TV

3 Answers

Philips 27pt6441/37

The only way now would be to get the service manual I'm afraid. Good Luck

Feb 22, 2008 | Philips 27PT6441 27" TV

1 Answer

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You have a shorted power component. Probably either the voltage regulator or the Horiz. output transistor. Both will be mounted to a heat siink of some type. The Horiz. power circuits along with the flyback transformer power up 90% of most TV sets.


Feb 16, 2008 | Televison & Video

1 Answer

Vertical chip blown

wuts the model number of the set

Nov 11, 2007 | Televison & Video

5 Answers


I found this on Bob Vilas website, it worked for my t.v. hope this helps someone else out-ttu821
"This will probably work for most Orion V-chips... I figured it out looking at another manufacturer's instructions, on my Orion it was:
* Turn the volume down to 0
* Change to a blocked channel (where it asks for V-Chip password)
* On the TV (not from the remote) hold the volume down button
* (While holding volume on TV) hold the '0' key on the remote for between 2-10 seconds...
* The screen should unlock, and you should save no V-Chip restrictions.
You can now use your manual to find out how to set the restrictions you want."

Oct 02, 2007 | Orion1934 19" TV

1 Answer

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All the IC's have a location number printed on the pc board, look for an IC with IC6F01 next to it.

Sep 06, 2007 | Mitsubishi CS-35607 TV

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