Question about Insignia I-LC23Q1 23 in. HD-Ready LCD Television

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Insignia IS-TVHD30 The TV has worked perfectly for a year and a half or so, but a thunderstorm passed the other day, and now it does absolutely nothing......NO lights, NO responses to switches or remote. The TV is plugged into a surge protector strip along with a DVD player, Satellite box, and VCR. Those all appear to be working; at least they have their "ready" lights on. I suspected a fuse, and took the case off the TV and found a line fuse, but it checked good with an ohmeter. There are no burnt smells, and no unsightly capacitors or other components inside. "Girociclo" got me the name and phone number of the company and support, but they just said to send them the TV. Can one of you please help me troubleshoot this myself? Thanks

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Re: Insignia IS-TVHD30

Thre are no to many parts that you can test on the board ,I'll send pictures of what and how you can test some components I'l let you know wednesday . thank you

Posted on Jun 12, 2007

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I have almost the same problemwhen my tv is on it starts off by goin up and down and just jumpin I've had it 4-5 years now and just the beginnin of this year it starts jumpin. its not like back in the day when the old tv starts jumpin all u have 2 do is go 2 the back of the tv and play with a button that will stop it from jumpin now 4 this tv i have 2 call a mechanic to fix it so please can u help me
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You can search this database for the service info you seek about your tv here:

Most service manuals with schematics cost about $27.95 for the PDF version of it, otherwise the paper version is about $15.00 more for handling and shipping.

You will need the chassis number of the unit in question in order to search for it. I hope this helps!

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I fixed the problem with the "no power on, low clicking noise". The NPN transistor (2SC5931) was shorted. This transistor controls the horizontal hold. The shorting caused the power supply to overload and restart, then recycle. This was the cause of the clicking noise. Unfortunately this transistor was over $50, most likely due to the extinction of CRT's. I did find a replacement transistor 2SC5552, which only cost $2 (but I was able to get it in Mexico). The location of the transistor is located on the left side of the TV (looking from the back). Directly in front of it is the high voltage transformer which powers the CRT (should have a thick red wire). The transistor is attached to a large aluminum heatsink. To remove the transistor you will have to remove the entire electronics assembly to you can easily get to the underside. This was the solution for my TV, but there could be other components damaged.

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I, need the exact model no. to see if you can get part for it . need also to know if it uses an external power adapter thanks

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