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Visitor
Posts: 3
Registered: ‎01-07-2018

NS-28D310NA15 No Picture

First post to this forum. I thought I'd look for some help here, after contacting Insignia Support and before I trash my TV.

 

Here's what I sent to Support, edited slightly for clarity:

 

Problem Description or Question: TV hasn't been used in over a year, but it worked fine when last used. Now it won't power on, using original power supply, fresh batteries in the remote, and trying both the remote and power switch on the set. Red light blinking continuously next to IR receiver.  
Steps Already Taken: Tried holding the power switch for 10 seconds, also 45-60 seconds, with power connected and disconnected, as suggested on various websites. Pressed all buttons on remote with batteries removed. Removed back cover on TV to inspect interior. No debris present, all wires connected, capacitors look good, no surface evidence of any problem. Inspected the power supply and input on TV; both look normal. Tested the power supply with a multimeter: showing approx 11.5 V DC output. 

Additional Products: None at present. 
Connecting Cables: None at present. 

 

That said, the obvious source of my problem would seem to be the mainboard; however, I'm wondering if the power supply delivering only 11.5 V DC could be a factor.

 

Any suggestions will be appreciated. Thanks!

Posts: 8,506
Topics: 387
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Solutions: 358
Registered: ‎09-29-2008

Re: NS-28D310NA15 No Picture

Hello streetwriter,

 

Welcome to Community@Insignia!

 

Given what you've described and the troubleshooting steps you've taken having been unsuccessful, your TV will likely need repairs. You can pursue service by carrying your TV in to your local Geek Squad. You can schedule an appointment by visiting We're Here to Help and selecting "Make a Reservation" under "Getting Help is Easy."

 

Regards,

John

Insignia Support

John|Social Media Specialist | Best Buy® Corporate
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Visitor
Posts: 3
Registered: ‎01-07-2018

Re: NS-28D310NA15 No Picture

Thank you, but I know it needs repairs. My question was about where to start. Is the power adapter putting out under 12V the likely culprit, or should I go straight to a new mainboard?

 

I've already taken the set to a service depot, where I was told it wasn't worth the cost of repairing it. I'm trying to minimise the cost of doing it myself, if I bother to do anything at all.

Posts: 8,506
Topics: 387
Kudos: 568
Solutions: 358
Registered: ‎09-29-2008

Re: NS-28D310NA15 No Picture

Hello streetwriter,

 

Thank you for the additional information.

 

A physical diagnostic would be needed to determine the exact cause of the issue, hence my recommendation to contact Geek Squad.

 

Regards,

John

Insignia Support

John|Social Media Specialist | Best Buy® Corporate
Give Kudos if you like this post or Accept as Solution if it answers your query!
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Visitor
Posts: 3
Registered: ‎01-07-2018

Re: NS-28D310NA15 No Picture

Hi John,

 

I went to a local Best Buy and the Geek Squad folks there told me they wouldn't service an out-of-warranty set or one that I couldn't be sure was purchased there. They also couldn't say what the blinking red light might mean. In fact, they seemed to know and care very little. I then went to a local TV repair shop, which took one look at the set and advised me it wasn't worth the cost of diagnostics, let alone repair. No one seems willing or able to tell me if the power adapter putting out less than 12V might be the source of the problem. If I could get my hands on another 12V DC 4 A adapter I'd try it, but so far I haven't found one. My point is, I'd prefer to avoid replacing the mainboard if it's fine.

 

J