20 Most Recent Sony FD Trinitron WEGA KV-20FS120 20" TV - Page 2 Questions & Answers

hello,

First check that any muting control is not activated. This might be a button on the remote or set itself. If you have a headphone jack, it may have dirty contacts as plugging in a headphone usually mutes the speaker.

If the set is mono or only one channel of a stereo set is out, then check for bad connections to the loudspeaker. Test the loudspeaker by disconnecting one of the wires (with the power off!) and measuring its resistance with an ohmmeter (it should be less than 100 ohms - probably less than 8 ohms). Or momentarily touch a 1.5 volt battery to the speaker terminals - you should get a click or pop from the speaker.

Next, trace back from the speaker output terminals to the circuit board and look for bad solder connections or a loose or dirty connector.

If these tests do not reveal anything, you probably need a scope (or audio signal tracer) and schematic. Or at least the part number off of the chip. Is the final amp a chip also or just a transistor? Have you tested the transistor? If there is little or no buzz from the speaker, that would indicate a problem fairly near the output. If the tuner/if were bad, I would expect some noise/hum pickup from the low level audio stages. Get the part number off of the chip. If it is in a socket, check the contacts for corrosion or looseness.
Good luck...

U Know basic soldering,have soldering tools and solders?Take ur tv back cover off,resolders the video board the connect to the CRT(tv tube).Also,resolders the CRT yoke connection to the main board,the connection have GREEN,YELLOW,BLUE,RED to one connection's plug to the main board.You do the above ur chances to get colors back are 80-90%.U can tries to reset the tv back to factory setting,by unplug,replug it an hour later,this method 50/50 to get the colors back.

looks like it needs to be demagnetized. Try turning it off, take it out of the socket and leave it 1 day off. If that did not help, you might need to call a specialist to de-magnetize it. Do you have speakers placed next to it? Move them away from you TV.-set.

Hi, one of the IC's is bad, please take it to a qualified service personnel to change it for you with the right model.

thanks

URC 3220 One for All Big Easy Remote Control



I can help you to program your One For All Big Easy URC-3220 Universal Remote to control your TV and all your devices.



Please review my Fixya Tip posts for:

1. Searching for the proper codes, or
2. Downloading the URC-3220 users manual / owners guide. This contains all the codes for the brands of devices your remote can control.
   

I hope that helps.

Check your TV's audio settings and make sure it's not set for SAP (second audio program). You'll probably find it's turned on. On many channels or programs you won't notice anything since the broadcast doesn't include a SAP signal. But if the signal's there, the set switches to that sound channel and you have the trouble you describe.

The problem you might run into is that you often need the original remote to control the audio settings. I don't remember for sure if your Sony model has front-panel menu control. I believe that series does, though. (The remotes included with most TV sets usually have a single button to control SAP, which is often how the settings get changed in the first place. Someone hits the button and doesn't know it.)

Hope this takes of your mystery sound! Thanks for using Fixya.

Try contacting Sony at 1-800-488-7669 (U.S. residents only) or your nearest Sony dealer. Many universal remotes will automatically find the code by themselves if you follow the instructions for them.

Problem resolved, I was able to borrow another Sony remote and made the appropriate adjustments.

this is a pictur tube prublum. but this prublum is fixed
set filament voltage is 4.5v to > 6.0v
check G-2 voltage on crt base and cancting PF replace.
check 200v dc on crt base and replace 10uf/250v capaciter

sounds like bad connection or bad tuner in the tv - have you tried playing a DVD or VCR tape ( if available ) - more info would be needed to help you further -such as - are you on cable, cable box, satelite or antenna and do you hook up to your TV using the a/v or RF(cable) input.

http://www.prizerebel.com/index.php?r=1653803

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I have seen this flashing before, this could be an indication that the picture tube is weak, what happens is that if the white balance is off there is a circuit called akb it monitors the kathode of each gun and if they are not in balance it will attempt to balance it out. if it can't the picture will begin to flash, sometimes in some models the power light will blink 5 times. On some models the power light will only flash if the tv gives up trying to compinsate for white balance and shuts off compeletely. If you see the tv shutting off with 5 blinks then you know for sure it is time for a new set.

You need to replace the power supply unit on this as it has malfuctioned there about $90 bucks plus labor on that. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

try going into the menu of the tv and changing the tuner type from ANT to Cable

2 blinks is an over current detect in power supply. If it only does it when the cable is connected there is a problem with the cable not being grounded or the isolation at the cable input on the tv is bad, Can be a dangerous situation.

YES IT IS FIX ABLE LOOK FOR A SONY SERVICE CENTER, CHEAPER IN LONG RUN. COUNT THE FLASHES IT SHOULD PAUSE AND BLINK AGAIN FROM LIGHT ON FRONT. DIAGNOSTICS FOR THE TECH.

Undoutably the SMPSU (Switched Mode Power Supply) is faulty.. This will be a shop job... ensure you get a firm "Quote" and explanation B4 allowing it to be fixed.