20 Most Recent Sony FD Trinitron WEGA KV-20FS120 20" TV Questions & Answers

use your tv/video button to change inputs

Be sure to use an ORIGINAL Sony transistor and be sure to resolder the pins of the small horizontal driver transformer and all parts connected to and around it, and your set should be fine.

You have a bad video cable connection or video card has failed. Try unplugging the cable and or relacing it. If not it may be your video card.

Power supply or AC wire. It could be a fuse if no lights come on.

Buddy that thing needs resoldering job on it's crt connector board some cold solder,cause the problem(red to normal) comes in and out.So if you can't do it,try to see qualified friend to do so...Thanks Dods..

The standby light should be blinking a repeated count with a pause between counts. Can you post that here please? That will indicate the cicuit in which the problem was found that casued the shutdown. Armed with that info, I should be able to indicate the most probable defective parts and how to resolve the problem.

Thanks,
Dan

Check its main power regulator section circuit and replace damaged component/s. If you have sound knowledge in electronics, you can do it by yourself. If so, send your email address to me by Fixya, and get a copy of the schematic diagram of this set by return mail. It will help you to locate the fault very easily.

press the display button on your remote.hope this could help you.u

The 7 blinks indicate a high voltage shutdown (high voltage exceeded 33,000V). This is usually caused by a defective regulator. Could you please post the exact model number (KVxxx) and I'll look up the part you will likely need?

Thanks,
Dan

The standby light should be blinking in a regular pattern. Please count the blinks and report that number here. It is an indication of the problem circuit.
Dan

The 2 blinks are an indication of an over-current condition, otherwise known as a short. Typically this is because hte horizontal output transistor has failed. If you are comfortable with working inside the set and can solder, you should be able to resolve this yourself. Look for a large transistor (3-legged part) attached to a heatsink close to the flyback transformer (part with large red wire coming out the top). Post the marking on that part here and I'll give you the complete part number. Replace that part and you should be OK. If not, we'll need to investigate a bit more. The part should not be more than about $15.

Keep me posted.

Dan

yes i have a tube you need

This is the SMPS Power suply drive and the IC fails ONLY if there is fault in the circuit. You need to check on the SMPS section
check this link below for tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Next you need to check if the LINE output transformer has failed. If so this will have a higher current drain and so switch off the SMPS unit. check for the EHT drivers, capacitors in the HT circuit.

Hi,
Does standby light start flashing when tv shuts off?
If yes, how many times red light flashing after 3 seconds long pause?
Let me know is it Sony KV-20FS120 or any other model to diagnose the problem.
Thanks.

Hello,

does the TV bring out sound even as the screen display is dark?

Problem should be from the TV lamp/bulb. When a TV bulb/lamp is dying, it makes the pictire on the screen become dark and very hard to see.

Have the lamp replaced and hopefully, your screen should be perfect as before.

Let me know if you need directions in replacing the lamp, even though it is very simple replace.

Yours sincerely.

Elect_Comp.

first things first make sure your power outlet has power by plugging in something else and make sure the power outlet isn't controled by a light switch. hope this works for ya.