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Shahid, Technician
Category: TV
Satisfied Customers: 10830
Experience:  I have been repairing electronic gear since 1993 as a qualified Sony tech
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40 inch won't turn on, Coby flat screen, unplugged, just

Customer Question

40 inch won't turn on
JA: What's the make and model of your tv, and has turning it on been a problem in the past?
Customer: Coby flat screen
JA: What troubleshooting have you tried?
Customer: unplugged
JA: The TV expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: just that thanks
Submitted: 11 months ago.
Category: TV
Expert:  Shahid replied 11 months ago.

Hello and Welcome. My name is ***** ***** I'll assist you today. I'm sorry you're having trouble with it. Please reply back when you're ready to proceed.

Expert:  Shahid replied 11 months ago.

1- Could you please get me the model number written on back of TV?
2- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?

Customer: replied 11 months ago.
I can't see the model # I have Cable TWC
Customer: replied 11 months ago.
I have a modem and a router
Expert:  Shahid replied 11 months ago.

Model number is ***** info to get the related manual for troubleshooting purpose.

Please check back cover or side panel of TV for model number info.


Customer: replied 11 months ago.
Im trying toget the model #
Customer: replied 11 months ago.
I can't see it
Expert:  Shahid replied 11 months ago.

OK, does power indicator light on TV lit or blink when press power button?
Also, have you tried to plug TV power cord in another wall outlet?

Customer: replied 11 months ago.
The blue on light comes on then goes off
Customer: replied 11 months ago.
Expert:  Shahid replied 11 months ago.

Typing info for you, please give me few minutes.

Customer: replied 11 months ago.
Expert:  Shahid replied 11 months ago.

OK, this kind of symptoms in Cony TV occurs due to failing main board and replacement of main board will help to resolve the problem. You can get replacement main board for your TV at following board supplier if you have plan to do-it-yourself..

If you are not comfortable working on it yourself then you may please use following link to get list of TV repair shops in area which will help to get repair quote...
I'm sorry there is no easy or quick fix for this problem and it is definitely hardware failure that needs defective board replacement to resolve the issue. I trust my input will help you out to make decision about this TV repair or invest that money on new replacement TV. Please feel free to respond if you have any additional questions.
A positive rating to answer would be greatly appreciated, please click on 5 star on this page then click submit/finish button so I can get credit on website for my work. If you don't see rating option then intimate here.

Expert:  Shahid replied 11 months ago.

Hi, do you need any further assistance with this question?