20 Most Recent Sony FD Trinitron WEGA KV-20FS100 20" TV Questions & Answers

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/

Sony FD... • Answered on Aug 02, 2014

You want to know the procedures to auto-search, I assumes and posts this solution. Just download its user manual by this site, and refer it. It has all details.

Sony FD... • Answered on Feb 07, 2013

Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits. Check this link to get more details about Sony Blinking codes.

Sony FD... • Answered on Jan 13, 2013

Have to be reprogramed in again.

Sony FD... • Answered on Oct 21, 2012

hi, did you work out how to fix this? I have the exact same problem on the exact same tv right now!!

Sony FD... • Answered on Sep 19, 2011

If it flashes four times in a row and then stops, and agin flashes an another four times, and so on, the fault must be in the vertical sweep section in your TV. It is inside the mainboard. To rectify it you should open the TV and should find out the vertical section. Usually an Ic is used for this function. When you open the back cover of the TV you can see the deflection yoke, that is, the coil fitted on the picture tube neck. There are four wires comes to it fom the main board. Amoung them two are thick, and the other two are thin relative to the thicker one said above. The two thicker wires are for horizontal sweep, and thinner two are for vertical sweep.
Follow the two thinner wire said above, and find it frome which point in the mainboard it originates. Somewhere near to that point, you will notice the vertical Ic said above. It will be screwed into a metal heatsink, and is small in size. Usually Sony uses "LA" series ics for their sets. You just note its number. Before unsodering it look for any dry solder points around or on the legs of the Ic itself. A good practice is to resolder all the suspected points by applying a liitle bit solder. You must have some concept of soldering in this time.
Measure the input voltage to that Ic. It will come around 24VDC. If the main voltage is there, take the voltage of its output pin. It should be almost half of the input voltage.
If there voltages are there, and still problem perists, replace the Ic with a similar type and number. Take care and beware. You are working with an electical equipment which have very high voltages inside it while working.

Sony FD... • Answered on Oct 27, 2010

Since the system control does present channels and sound it's not likely that it's the system control (computer) that is at fault. Try making sure that nobody is playing with a remote and also try see if the effect is happening all the time or only sometimes. If bright sunlight or other infrared source is not visible to the sensor on the front of the TV.

Sony FD... • Answered on May 30, 2010


Sony FD... • Answered on May 30, 2010

contact the manufacturer, your TV will need servicing since parts needed to be replaced...

Sony FD... • Answered on Nov 03, 2009

4 time blinks in Sony KV-20FS100 means TV has problem in vertical deflection section and most probably vertical out IC545 is bad or missing its supply volts.
Check +13 volts on IC545 and if volts are there, replace IC.

Sony FD... • Answered on Aug 31, 2009

Is the favorite channel menu a function that is normally accessed by a button on the remote?

If so, that button on the remote might be stuck.
If this is the case, the menu may at times pop up all by itself and other buttons on the remote and on the TV's front panel may not respond at all (it had happened on my remotes more than once).

Try to clean the remote control (the housing, rubber pad with knobs, circuit board) with ethyl alcohol, when you clean the housing, you should also clean the holes through which the buttons protrude, there might be some dirt that keeps the button stuck.

It may also be a stuck button on the TV front panel, so check these too.

Also, it could be something else, i just wrote the description of a problem and the solution which to me seemed most likely.

Hope you get it fixed.


3rq8 (Triarcuate)

Sony FD... • Answered on Jul 26, 2009

When it is shifted to right vice versa, it indicates a distortion on the horizontal output. Try replacing all the capacitors around the horizontal output area with the same original value. Make sure the horizontal output transistors you replace hasn't started going gone bad already if you know how to check them. Them dimness in the picture is caused by the horizontal output not putting enough high voltage to the CRT. Look for leaking capacitors too. Also replace the resistors around the horizontal output, they may have burnt out or changed in value from overloading cause by the malfunction of the flyback, and the transistor.

Sony FD... • Answered on Jul 01, 2009

take it back to shop

Sony FD... • Answered on Jun 04, 2009

Just had the TV repaired for the same issue. According to the shop it was a bad channel up/down switch. That impacted the other functions (menu not working, remote malfunction) because they're all intertwined. Only about a $75 fix here in the DC area, so maybe cheaper elsewhere.

Sony FD... • Answered on Feb 17, 2009

There is a problem in the sweep section of the set. The Horizontal sweep power supply most likly. there is nothing a layman can do as it will involve troubleshooting the solid state circuit. please find a trainded tech to assist you in this repair.

Sony FD... • Answered on Aug 24, 2008

plug out tv and start over by then the tv will reset itself.if that does not work call in a tech to solve,your problem.good luck/

Sony FD... • Answered on Jul 14, 2008

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