20 Most Recent Sony FD Trinitron WEGA KV-21CL10 21" TV Questions & Answers


try to short the spider transistor along ic amplifier. it is in a mute

Sony FD... | Answered on Aug 13, 2017


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Sony FD... | Answered on Mar 09, 2017


Id try ebay or thefind.com you may get lucky and they will suggest a substitute. Radio Shack may also. How do you know the transistor is bad?

Sony FD... | Answered on Mar 06, 2015


Check all the solder terminals at its video output card;[CRT base card]. Check the soldering of the CRT base socket. A dry solder joint or an open color output transistor can cause this fault; provided the picture is there. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
The fault is technically called 'one color predominant screen'. Use this keyword to search the site.

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Sony FD... | Answered on Jan 26, 2015


first check main card and then check fuse .if fuse is blown put new one amp fuse.af set is ok leave it .if not work then chcck seitching transister and S.T.R 6007and oo120volt zenner diode.

Sony FD... | Answered on Sep 20, 2014


I never could get my service manuals for free. In my days I even had to prove I was certified by Sony to repair their Triniton TV.
I can't find any Trinitron service manual and I discovered recently I even lost my PDF copies. There used to be some east European sites with manuals, but I think "security" from NSA is blocking everything coming from there.

Sorry I can't help now. Ill keep looking, because I want my PDF's back.

Sony FD... | Answered on Jun 24, 2014


Check the speaker/s first. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Sony FD... | Answered on Apr 15, 2014


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given

Sony FD... | Answered on Mar 05, 2014


If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/ Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. Circuit diagrams are n PDF, and cannot include here by this window.

Sony FD... | Answered on Jan 07, 2014


These horizontal lines are vertical flyback lines and would indicate
one or more of the tubes cathode drive circuits are defective.
As the picture is predominantly yellow this would indicate excessive drive to red and green guns. Check the red and green video output stages especialy any clamping diodes.regards from Vintie

Sony FD... | Answered on Oct 30, 2013


Hi
Please do not dessolder anything before a thorough test. You should first check the main fuse. If it is blackened the MOSFET switchinhg transistor is probably bad and need to be replaced. The test should then go on thorugh the output line voltage in search of shorted components.
Only when the fuse is clean but open (interrupted) you can replace it and plug in the tv set and test.
Be careful and follow safety instructions on dealing with high voltage section of tv set. High voltage is letal.

I hope this will help you,

Sully

Sony FD... | Answered on Sep 27, 2013


check the color drive, and resistors that change value or open, check also the connections

Sony FD... | Answered on Sep 22, 2013

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