Question about Sony KV-27V42 27" TV

1 Answer

Control Board Problem???


My Sony KV-27V42 suddenly started to scan through channels all by itself, and the sound level would increase to maximum all by itself. At forst I could get it to settle down and stop, but the next time it wouldn't.

I did notice, since I bought the TV, that if I adjusted the volume via the button on top it would sometimes change the TV/VIDEO setting (button adjacent to one of the volume buttons. I'm wondering if the board with all the switches may be defective.

Have you seen/heard of this before?

Any thoughts/suggestions/solutions?

Charlie Seested

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 10,594 Answers

Switches can be cause of this problem but I been experienced SysCon IC defective many times.

Posted on Jul 27, 2008

  • Shahid Electronics
    Shahid Electronics Jul 27, 2008

    I am working in service center, not in usa, thats why I told you.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a sony tv model kv-27v42 i have sound but no pictture and stand by light blinks what is the problem

How many times do this standby light blinks at a time of switch on? These blinks are fault indications. From the number of these blinks, you can get an idea about the faulty circuit section inside it. Count it. If you wish to get more details about the blinking codes to Sony TVs, check this link.

Feb 24, 2013 | Televison & Video

1 Answer

The volume ramps to maximum. I can adjust it back

Sounds like the circuit board for the button keys in front has a shorted tactile switch causing sound to keep increasing, Replace all switches on this board or get new board. I believe it is called a HS board or very close to that.

Dec 30, 2009 | Sony FD Trinitron WEGA KV-32FS200 32" TV

1 Answer

Sony KV-36FV27 too dark, pink or green tint, 5 blink error,

Fuzzy,blury picture in CRT tv tube.Tv in long use not repairable.Tv tube is dying,it junk.

Mar 27, 2009 | Sony FD Trinitron WEGA KV-36FV27 36" TV

1 Answer

Sony trinitron kv-27v42

Horizontal Out Transistor is shorted and have to replace it.

Jun 25, 2008 | Sony KV-27V42 27" TV

1 Answer

UHF Tuner

Check to see if the TV/CABLE setting is on CABLE.

Jun 05, 2008 | Sony KV-27V42 27" TV

1 Answer

Sony KV-21GMR1

Your enquiry (not even a question) is very obscure. There are many things in a TV set that can cause "No Picture".

Does the TV have sound at least, or is it just dead???

Common failures in priority order in this model are in the scan amplifiers and power supply, audio output, the tuner module, and the CRT.

Your set will require service.

Jerry G.

Mar 20, 2008 | Sony KV-27V42 27" TV

1 Answer

Sony gv-27v42 27" tv picture cuts out after a few minutes

Vertical lines down the center only means that you have a loose connection on the Yoke. Re solder all the connection on the yoke and where the yoke connection meets the main board.75481bd.jpge307a54.jpg

best regards

Dec 21, 2007 | Sony KV-27V42 27" TV

2 Answers

Unavailable Part

More properly called the "A" or main board.Can be repaired by

a qualified tech in a shop setting.Possible horiz or power circuit


Oct 15, 2007 | Sony KV-27V42 27" TV

2 Answers

Sony kv-32v40 Screen blins on and off

Increasing the screen control will not repair the problem,look for loose conections in the Horizontal driver transformer,readjustback the screen control.

Aug 25, 2006 | Sony KV-32V40 32" TV

Not finding what you are looking for?
Sony KV-27V42 27" TV Logo

69 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts


Level 3 Expert

102366 Answers

The Knight
The Knight

Level 3 Expert

74990 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides