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CIRCUIT DIGRAM plz help regarding circuit digram for sharp tv model no 20A2-S. I woluld like to know the parts no in circuit coz some parts from circuit got burnt which i could not identify the number, i will be very thankful to you if you could response as soon as possible. thanking you. please mail me on this address

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You should be able to find the service manual for your set at the following link and it should include part numbers for the items in question.

Posted on Jan 04, 2008

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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

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I need a remote control for a Sharp TV model #

alternatively if you cant get one for sharp tv you can always replace with a universal tv remote. they are there in the shops. then programme to suit your tv model.

Sep 18, 2011 | Sharp Portable Televisions

1 Answer

Along the top of the picture on the screen is green, how can we get rid of this please.

You are saying about a horizontal green belt acorss the screen at the top. It can be due to main power supply [regulated power supply inside your tv]. Check it whether proper power supply is there or not. Normall it shuld be between 110 to120VDC. Different manufactures have different operating voltages. You should refer to the schematic digram of your tv.
An other cause ca be the lack of voltage, or improper voltage to vertical output section. I thing that you haven't replaced the deflection yoke of your tv till now. If deflection yoke have been replaced, convergence assembly at the neck of the picture tube should be aligned properly to rectify this probelm. Contact an experienced service personal. Ok.

Oct 18, 2010 | Audiovox Portable Televisions

1 Answer

Tv wont turn on

Try to check the back cover. If it is wet may be their was a short circuit. Have i t check to a qualified technician so that no further damaged maybe incurred by the unit. Power supply is affected if it was plug in for a long period of time with out unplugging it from the outlet. If it was turn on again it must be unplugged and rest for about half a day coz the power supply still received the current from the source.

Please specify if you have experience checking it with the technician?


Dec 31, 2009 | Portable Televisions

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establish if fault is in smp or in other part of circuit 1 disconnect smp from rest of circuit 2 connect 60 w light ie filament type 3 if bulb lights up brightly fault lies in other part of circuit [for this purpose may be regarded as aload] conversely if it doesnt fault lies switch mode power supply

Feb 07, 2009 | Samsung Portable Televisions

2 Answers

Sharp Colour Television Model 21D-ME -

change 8v regulator and capestor for 180 volts

Dec 15, 2008 | Portable Televisions

1 Answer

I cant read the scroll on the bottom of the screen

You don't give a model number or age of the set so I can't be too specific, but there is an adjustment for picture size (it's actually termed "vertical height") in TV sets. Many newer sets make adjustments through a service menu using the remote control, but many sets have a physical adjustment control inside. I can't tell you how it is in your set, but you can take the back off and look at the circuit board. If you see a small round adjustment control (screwdriver slot for turning) marked "vertical size," "height," "vh" or something similar, that's the one. A little turn one way or the other will do the trick.

Now having said all that, it's also possible there may be bad capacitors in the set's vertical circuit. Is this a problem that just started, or that's gotten worse over time? Do you notice distortion at the top of the picture, like a person's head or other round object looking stretched out if it's at the top of the screen? If so, that's usually a sign of capacitor failure. There are a few in the vertical circuit, usually in the range of 1 to 10 mfd at 50 volts, and they commonly go bad with age. Without knowing what model TV you have I can't suggest specific part numbers.

Hope this helps or gives you a start.

Nov 19, 2008 | Portable Televisions

2 Answers

Have dec tv cannot get picture or sound will not auto tune

You mean to say is "dead set' .This kind of trouble is in power supply section busted fuse or busted regulator transistor ,or maybe no depected parts only brittle,loose,crack or cold solder joint of the circuit board...

Jul 22, 2008 | Portable Televisions

1 Answer

Maxim tv

apparently some tv's are made with parts from other makes... for example a sony will use parts from toshiba.. if you can find out or know if Maxim are using any other parts and know what other make ..then i can tell you

in summary: you may need a code for a DIFFERENT model tv.

May 27, 2008 | Portable Televisions

1 Answer

Sound works, picture is very dark

You have to be specific when asking a question please. as you dont mention its a flodable LCD screen TV as I had to look it up. your problem is in the backlite circuit. if your a tech, you should have no problem finding this fault but could be a little trick if your not as your going to need to know how a back light circuit works, the parts in the circuit and know how to use a multimeter. Good Luck

Aug 25, 2006 | Polaroid FCM-0700A 7 in. Portable...

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