Question about Syntax LT30HV 30 in. HD-Ready LCD Television

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No Sound or Picture

My Syntax LT30HV power light comes on but there is no picture or sound. I can't even bring up a menu screen.

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Re: No Sound or Picture - Syntax LT30HV 30 in. HD-Ready LCD Television Flat Panel Televisions

Check the power supply module first.

Posted on Oct 29, 2009

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Comes on fine, good picture and sound. After about 15min. sound stays on but picture goes black

Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Jan 27, 2016 | Syntax Olevia Lt30hv 30-inch Hd-ready...

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Have power and sound, but no picture. Syntax Olevia LT30HV 30

Common problem unfortunately. That's you need a new inverter board. You can have it repaired or if you are savvy enough you can replace the inverter yourself. The inverter board costs about $150 at
Good luck!

Feb 27, 2010 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

No picture just sound - when i turn the tv on the screen goes blue then black and doesnt come on at all.

Common problem unfortunately (mine too). What's you need is a new inverter board. You can have it repaired or, if savvy enough, you can replace the inverter yourself. The inverter board costs about $150 I have seen some on ebay but don't know if can be trusted ;)
Good luck!

Jan 14, 2010 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

Picture for a few seconds sound perfect

You have bad inverter board, very expensive module, over $100.

Oct 20, 2009 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

No picture gets sound

The Backlight inverter board is more likely to be bad, very expensive part, over $100.

Aug 11, 2009 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

My picture goes blank

One of two things, the backlight inverter board is going bad (usually has open winding on the transformers), second, the 24vdc power supply section of the main power supply module is bad due to bad filter capacitors.

May 25, 2009 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

My syntax Olevia LT30 HV turned on and displayed blue screen for 1-3 sec and than no signal nosound??any advice seems to be inverter issue.

Since you lost both sound and picture, I would suggest to take a look at the power supply for bad filter capacitors, look for bulging on the top of capacitors. If the backlight inverter board is bad you should still get the sound.

Apr 23, 2009 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

Syntax Olevia 30" LCD - blue screen, then black screen, sound is on

you have a broken inverter board. I have a LT30HV, and it had the same problem. The inverter board supplies power to the backlight. Swap it out with a good one, and you're back in business.

To test, take a bright flashlight and point it at the screen just an inch or so off the surface. If you can see your picture, then you have a blown inverter.

it may not be worth fixing it. Wait for a good sale on a new one. My inverter cost about 150, and it was a remanufactured part. Not as good as the original part as it flickers just a tad. I had to take the entire TV apart, with pieces literally everywhere. My cats loved it.

Oct 21, 2008 | Olevia LT37HVS 37 in. LCD HDTV

1 Answer

My tv has sound but no picture

If you haven't bricked this unit yet, or paid Syntax/Olevia's highway-robbery price to fix it (and pay STUPID prices to ship it to and fro), there is hope. Despite what Syntax and others say, it IS a replace-able part that can help get your TV to last at least another 12-24 months. During that time, you can save for a new, more reliable and reputable TV.

This is a well-known (at least those of us who had ours fail before yours) symptom of a bad backlight power inverter, which, for the LT30HV is a pain in the arse to get to (it's behind the main power distribution board and motherboard w/Pixelworks chip). If you can take apart a tower computer and install I/O cards, you can do this. These parts are made cheaply in China with 64 weld points that fail 100% of the time - and many other 'name' brand LCD TVs use this exact same CCFL backlight inverter. I'm working on posting the procedure somewhere on the net. The procedure shown in MoniServ's website is on a Kreisen set, which looks FAR more easily serviced than the LT30HV.

Good luck,

Dec 26, 2007 | Syntax LT30HV 30 in. HD-Ready LCD...

1 Answer

Sound but no picture

Everyone - this happens to EVERY LT30Hv, and is fixable despite what the **** idiots at Syntax. They are not a TV manufacturing company, they are an import/export holding company with a freaking LOUSY website. This is the part you most likely need. If you can work on a computer, you can probably fix this yourself. I'm helping everyone I can help with this to shove it down Syntax's throat. I am in the midst of performing and documenting my second repair of this same procedure, and will post on Flickr when I can get it up.

Nov 10, 2007 | Syntax LT30HV 30 in. HD-Ready LCD...

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