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Sir,i am a trader of ic's & transistor's in india ,specially in TV ic's . so i want to know from where i can get microcontroler for TV-LG,SAMSUNG,SONY,PANASONIC,HAIER,TCL.pls help me to get this items at best price.

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I f you got the chip handy then google the numbers embossed on the chip. Also try Allied Electronics or Newark for microprocessors.

Posted on Jul 25, 2009


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    1 Answer

    T.v. does not work after getting hot and then when cooling down she will start again

    Open the back cover & check if any of the fans used for cooling are running at low speed. Some IC's , transistors are provided with heatsinks to cool down & in between them a thermally conductive silicon paste is used to reduce the gap. If the paste has dried the related semicoductor will heat up & the TV will not work. So use a new paste for the heatsinks. Such problems are generally temperature related.

    Aug 09, 2011 | Televison & Video

    1 Answer

    Tv picture screen sqeez from the both side(parabola)

    It is called Pincuschion Distortion. There is a pin cuschion correction circuit in the main circuit of your TV, which is composed of an IC and transistors. It is closely related to horizontal output section. Normally the components in this section will heat up during working, and due to this, loose solder points are quite common. Just open your TV, pull out the main board, and locate this section. It can be easly located very near to Line Output Transformer [LOT]. Normally, loose soderings are very difficult to locate as they will be microscopic. So resolder all the suspected points there, by applying a little more solder, without making any solder bridge in between them. This is the first thing we also do in service field. If this doesn't help, replace the Pin distortion IC [normally a small IC with 8 solder terminals], and the pin output transistor, whcih can be located very near to this IC, will be screwed onto a small heatsink. OK

    May 01, 2011 | Sony FD Trinitron WEGA KV-27FS200 27" TV

    1 Answer

    My Philips DVD DVP 3005 won't play any sound. The picture is absolutely fine though. What can I do?

    Find out the protection transistors between buffer ic 4558 and sound output rc socket and remove them and also check both + / - 12V on ic 4558

    Thanks & regards
    Shrinath inde
    maharashtra india

    Dec 28, 2010 | Philips DVP-3005 DVD Player

    1 Answer

    Although tv is showing picture the colours only showing background etc are green and blue

    Your TVs red colour output section has the trouble. There is no red output at the red cathode of the picture tube. The red, green, and blue output sections are on the picture tube base board. In some Philips model, these will be consists of transistors, and some has an IC or Tree ICs for three colour output used. You just open your TV, measure the voltages at these three cahodes. There will be markings on the printed circuit board for these cathodes marked as [Rk,Bk and Gk].
    In your TVs case the voltage at the Rk marked pin will be higher that the other two cathodes. This can be caused by an open drive transistor or an Ic whichever may ysed there. If it is transistor, just replace it with a same type and number, as in the ace of ICs the related Ic, must be replaced. If only one Ic is uded for red, green and blue outputs, that Ic must be replaced.
    If you need any more assistance, feel free to get me through Fixya. Ok.

    Dec 01, 2010 | Philips CCB130AT 13 in. Combo

    1 Answer

    My tv model 60P8341A philips television screen is red and dull in color what do i need to do?

    If your TV screen looks more red its red video output section is in trouble. Some philips circuts uses transistors while others uses ICs in that section. Philips magnavox model have both types. We here in India, have transistorised video output stages in Philips Magnavox sets. Whatever the ciruit type may be, the fault and its remedy is same.
    Check whether your set has transistors or ICs used. If transistors are used, check the collector voltage at red video output transistor. If ICs are used, some sets uses a single IC for Red, Green and Blue output stages. Some of them have three ICs on board as Red,Green and blue output stages.
    The video output stages are integrated on the base card of your TV. That is, a small square or rectangular board, pluged into the neck of the picture tube. You just find out the red,green and blue output transistors, or ics whichever may be used. It is ver easy to understand the video output transistors. They may be a little larger than other transistors.
    An easy way is to locate the Red,Green and blue cathodes of the picture tube base board points. Check the voltage of the three of them They must be almost equal to each other, provided a little, that is, 2 or 3VDC difference is allowable and will be. In your case, the voltage at the red cathode may be , not may be, must be low. As cathode voltage lowers, emmision of that cathode will rise, and poise that colour is in excess. If the Red Cathode voltage in your TV is found low, say difference betwwen other two cathodes is 50v or so, repace the red output transistor or the Ic if used at that stage. If a single Ic is used in your TV as R_G_B outputs, replce the same. If three Ics are there, replace the red output control Ic. ok
    If you have any more problems, inform fixya. They will send me alerts.
    Thank you

    Oct 20, 2010 | Philips Magnavox 27MS343S 27" TV

    1 Answer

    Onkyo TX-DS838 integra receiver got sound cutting off for few seconds during play back and problem keep incur after few minutes. Any suggestions to trouble shoot this problem very much appreciated. Cheers,

    Hello sir, there are several factors that might cause this:
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    2. High voltage peak, check for the voltage output VCC.
    3. the main amplifier is defective. if it is an IC amp. replace it. if transistorized check for the pushpull driver/transistor.
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    Jul 28, 2009 | Audio Players & Recorders

    1 Answer

    RCA R52WM24 52 in. HDTV convergence IC location

    the rca itc222 chasis uses no stk the convergence is controled with transistors... the convergence amp board is located above the main signal board(green board)... it can be identified as the one with several heat sink fins on it. FL231 is related to convergence.. there has been a problem with this fuse when it blows the processor doesnt know it is a projection set so it turns it into a regular tube tv. Here at the shop we have found number one reason this fuse blows is poor solder connection on the flyback. So replace the fuse and reflow the solder connection on the flyback and around that area also the horizontal transistor and then see if that doesnt fix the problem.. if you have an more trouble .....

    Feb 29, 2008 | RCA R52WM24 52" HDTV Projection Television

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    Vertical section problem? Part of screen is blank

    replace cap. 2465, cap. 2561, cap. 2460, and d6460

    Feb 23, 2008 | Philips 27MT3305 27" TV

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    Rca 2006 32v434t dead shorted out put

    One special transistor is there. Before you change the transistor please sure that this is the first time problem or repeat H output TR failure. If it is first time means simply change the special type of transistor C5591. This is the high current rated tr and Panasonic is the manufacturer. Repeat H out failure means do the following simple works. If there is any capacitor between H sync output from Ic and horizontal drive transistor. Reduce the mf value and slightly increase flyback capacitor value. And then put the new horizontal output transistor.

    Sep 06, 2007 | Proscan PS36800HR 36" TV

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