Question about Sony FD Trinitron WEGA KV-32FS120 32" TV

6 Answers

Sony KV-32FS120 I saw a prvious post for the same symptoms I am having. Dead set led blinks 9 times. The solution was to replace a couple of diodes on the "G" board. My set does not have a "G" board and I have the Sams photofact for this set. The diode numbers in the previous solution do not exist in this set. Any ideas?

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  • Anonymous Dec 01, 2007

    I have taken the back off my TV. I pulled out the board. Can I perform the solders with the board at an angle. I really don't want to pull off the leads. As you can tell I haven't done this before but I always like trying.

  • Ak530 Apr 27, 2008

    I cant seem to find these parts in the circuit board also is it on the circuit board that has a A or do I have to pull out the whole circuit board with all the wires also I tried and some of the wires won't come out does anyone have any pics?

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6 Answers

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Do i need to discharge anything, or can i just open up, pull the board and reflow the solder?

Posted on May 03, 2008

  • billabongsur May 03, 2008

    You guys ROCK! I'm an aero, kinda hesitatant to open up the TV, but it worked! I must admit, I needed magnifying glasses to find all those tiny parts. THANK YOU!!!

  • billabongsur May 30, 2008

    ok...didnt fix it permanantly. anyone have a link to the service manual?

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Our 3+ year old Sony Wega ran into the same problem. My wife searched and found this wonderful and helpful web site. Followed these same instructions and resoldered these 7 components. The TV works again. Great web site. Thanks!
Suggestion to my biggest problem... carefully lay the TV screen side down to remove the back. Remember to remove the 7 screws around the connector section. Then, to remove the A-board, you need to reach down on the left side of the board and press down on a clip that holds the board in place. When the clip is held down you can easily slide the board out. You may also need to remove a few short wires/connections to be able to pull the board out completely out of the chassis. I did not remove all of the wires. I simply placed a towel on the tube and laid the board down on the towel to work on it. Good luck.

Posted on Nov 17, 2007

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  I also want to thank this web site for solving my problem with my sony kv-32fs120 tv.  Stand by timer lite flashing nine times.

fix was in the main board, I resolderd d647,q605,c690,d620,q691,q611. TV works great!!!

      

                       THANKS,

                       Rich

Posted on Oct 21, 2007

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I followed your directions on this one and it fixed it--- on the "a" board (main board on the bottom of the set)-re-soldered d647,q605,c690,d645,d620,q691,q611..... a friend reminded me to hit the area with some contact cleaner to clean the flux off also but cheers to you!!! thanks !! btw---- this was on a wega kv-32fs320 !!!

Posted on Oct 10, 2007

I just wanted to say that after visiting this web site and looking for identical problems to my Sony TV, same model number. This post fixed my set and i bet it will yours. I just wanted to say thanks for saving close to $250.00

Posted on Oct 03, 2007

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This is correct the TV does not have a G board and the statement that resoldering the parts is misleading. I fixed my daughters by resoldering the following: D647 Q605 C690 D645 D620 R691 Q691 I tested all the parts in the circuit they tested good. I am an Electrical/Electronic Engineer this fix will do you well. Locate the Q605 located on the main boar and all the above parts listed. Or just carefully heat each of the pads in the area and add a small amount of solder. Make sure they are shinny dull is a problem joint. Don't put too much heat on the pad it will lift. Use a 15 to 30 watt grounded soldering iron. (has a ground on the ac plug) Fix it and enjoy saving yourself a large fee. PS do not mess with the small surface mount parts, you will be asking for more problems. If this don't work relist and I will give you voltages to check....

Posted on Sep 25, 2007

  • roy metzger Sep 25, 2007

    use a very thin solder, not some big old chunk of wire. I use solder that is about the size of 22 gauge wire and remember to use only rosin core solder never acid core.

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good day.
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response is highly appreciated.


chris

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Sony FD Trinitron WEGA KV 32FS120


Hiii...
I'm not certainly sure how many time the led blinking ?

I hope hear from tou soon...

Thank's

[Vrya]
be_cek@yahoo.com

Feb 23, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony wega model: kv-32FS120 doesn't turn on


Check your power supply board and resolder the pcb, check the switching diodes and zeners.

Jan 30, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Blinks twice pause blinks 4 times


SYMPTOMS
Dead or Shutdown symptoms.
RESOLUTION
Dead symptom reported to be caused by the following:
1. Dead.
Found Q601 & Q602 shorted, R615 open, and IC600 on the A Board were the cause of the symptom.

2. Dead.
Found D614, Zener diode, on B+ line was shorted.

3. Set shutdown and the standby LED blinks 3 then 5 times.
Found 200v line was low. Disconnected CN706 on the C Board and found 200v now
present on CN706/pin 7.
Found: IC702 (C board) shorted the 200 volt line.
HQ Comments: C541 on the A Board could become defective if the 200v line is shorted since
the polarity on the capacitor will become reversed. R553 fuse resistor could also be opened
on the A Board.

4. Error code of 4 blinks .
Dead set press power button you hear the relay and you see red led flash 3 times and stops? Has no HV or other action. Tech removed the back as no 200 volt supply, did unplug CN706 and now has 200volts. Tech did remove the IC702 and same it comes up so needs this IC.

5. Dead. 5 blinks then 3 blinks. Found shorted Damper diode D504. Q502 has a built in damper, as well.

6. The TV does not turn On and the LED flashers 9 times.
Found one side of R610 open on the Base of Q690 on the A board.

7. Dead, 9 flashes, Q606
Would not start when cold, has stand by 5 but relay never energize.
No response from front panel or remote controls.
9 blinks is not in service manual.

Found Q606 (Zero Det.), on the A Board, had no soldered on the collector
of the transistor causing an intermittent connection.
Soldered the collector of Q606 and set returned to operation.
HQ Comments: Also refer to E30968554.

8. Dead. 5 blinks or 3 blinks
Found on the A Board D611 in the Power Supply open, and Hor. Output Q502 shorted.

9. Found Power Supply components D611 shorted causing Q600, Q601, and R615
to fail on the A Board.

10. No picture or sound. Standby flashes.
Found Q512 (Pin Out) shorted. on the A Board.





11. Dead. No sound or picture.
Found the FBT and Q502 were shorted, and R615 open on the A Board.

12. Dead
No power, Stand by light flashes 4 times.
Found T604 and IC601, replaced.
Found D611 on the A Board was the cause of the symptom.

13. Dead.
Found D534 shorted on the A Board.

14. Shutdown 4 Blinks.
Replacing R595, OCP Latch Q532 on the A Board, fixed the set.
PN 1-247-891-00, 330K 1/4 watt.

15. Unit shuts down after 15 mins.
Immediate shutdown - sometimes it give a 3 blink, sometimes nothing.
Found R595 (330K) was open located in the Q532 OCP Latch circuit.
R595 P/N 124789100 330k 1/4w

16. Won't power up. LED Blinks 4 times, B+ is very low
B+ is at 49V, +15/-15 only coming up to about 1 volt.
Wth Hor Out disconnected B+ only comes up to 50v.
Found D611 on the A Board was the cause of the symptom.

17. Intermittently does not turn on
Found a intermittent C633 on pin # 3 of IC600.
C663 P/N 113647911 Film cap .001uf 100v



Billy

If you need the service manual contact me at:billyjones@fletchersite.com

Jan 27, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

3 Answers

Sony trinitron television


How many blinks does the timer light flash? On a Sony this is a troubleshooting device.

Jan 20, 2007 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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