Question about Sony KV-9PT20 9 in. Television

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120VAC dead Works fine on automobile battery 12V circuit, but totally dead on 120VAC.

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Re: 120VAC dead

There should be a small fuse on the circuit board inside the tv. Sometimes the fuse is soldered direct to the board and not in a holder. Hope this helps you,,, Mechanic

Posted on Jan 18, 2008

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Will not run on battery. charged battery but will not hold charge.

Hi Martha, had a bit of a look around and noticed a few mentions of charging problems including the following - 'One of these units was apparently dead on arrival and on further investigation, it worked off mains but not from battery. The battery comes out from a flap underneath the unit, and on testing with a multimeter, it was under voltage, so must have been old stock. Despite 2 days of charging, no life, so I ordered a replacement battery (RITAR RT1250 or equivalent 12v battery) and it works fine. I also have a proper battery charger rather than use this unit's own charger, which charges the battery rapidly, but I think at the cost of battery lifespan. Given that I use this unit infrequently, this is fine, otherwise use the internal charger as normal. With the new battery, I've never managed to run out of battery.. it will keep going all day on a single charge.

The manual does state that if you don't charge the unit at least every 6 months, it may not charge.'

I know it's not exactly a resolution but hope it helps!

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I can't get a picture on my Roadstar LCD8082D TV

The TV has two main sections One is the Audio component. And 2 is Video section. Since they are Separate and not dependent on one another with the exception of synchronization; (matching Voice to the Video), one section may work just fine. The other non-working section in your case is the Video. Over time various internal parts age and wear out from use or hot/cold. In the Video section a series of Capacitors, resistors, diodes, and transistors on a circuit board make up the Video portion of the TV. One or more of these electronic parts are going bad or totally defective. The only solution is a replacement circuit board. Do not waste your money on repairing a circuit board. If you cannot obtain a replacement circuit board, then the Road-star is now a Road Accor.

Dec 22, 2013 | Roadstar LCD7310 7 in. Portable TV

1 Answer

Dead remote control

Just google in the Entrnet the brand name of your TV and ask link site of thier support service center so you can order the spare for remote control don,t forget give also the model number.

Hope it may help you;

Jan 02, 2009 | Portable Televisions

1 Answer

Sound works fine - there is no picture...

Your remote control has a button on it marked "TFT" (which is your LCD display). Power on your unit and hit this button on your remote - it turns power to the screen on or off. If your screen is just gray, as if it has power but not image (not black as in "dead") then you might be in the category of a different post of mine on this machine.

Dec 17, 2008 | GPX KCL8806DT 7 in. Portable Television

1 Answer

No power or anything

So I had nearly the same thing, only no intermittent behavior - just alive one day, dead the next.

I took my unit to an electronics repair place. For $25 they diagnosed AC power supply failure and offered to charge me a total of $110 to refurbish the machine.

I balked since we paid far less for the unit on Ebay ($70 or so).

The store gave me the parts list for the estimate though - and I bought the parts and did the work myself. Total another $25 approx, plus time. If you are up for some small electrical work, get a soldering iron, some electrical solder and a soldering wick. You will need, some wire cutters / strippers, and a screw driver too. you may also want a Dremel tool with a cutoff wheel.

Anyway, just replace the first 4 diodes after the transformer leads to the main board and replace the transformer.

The diodes can be from any of a number of manufacturers - mine are Vishay part number 1N5408 - 0827J. The critical part of this part number is the first 6 characters. Put the diodes in using the orientation guide printed on the main circuit board (otherwise risk putting them in backwards).

The transformer part was a Stancor, part number P-8657 - it converts standard wall AC (117V at 50 or 60 Hz) to AC at 12V, 2A. This part is BIGGER than the OEM Hang Fung transformer. I used a Dremel tool and cut out the mounting pieces for the OEM transformer from the main housing. This made enough space to fit the new transformer. Now the new transformer is held in place by clamping action of the two-piece main housing when the screws are installed. I DO NOT KNOW IF THIS IS SAFE, SO YOU ARE WARNED!!!

Unit works fine now. Mouser electronics has the parts and will ship USPS in a few days.

Thanks to VY Electronics, Rochester, MN for diagnostic work.

Dec 14, 2008 | GPX KCL8806DT 7 in. Portable Television

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Digital recieving

I suspect thr system may have parcially damage please try manual tunning or fine tuning

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check secondary voltage first and look for short.if you replace the regulator strs6707 you replace also c623 220uf/16volts

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