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Voltage regulator (tv)

Is d1880 compatible with d2499?

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You can go to this website and do a cross reference on those parts and you will also find the part(s) data sheet.

Posted on May 06, 2008

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Sir, why does the transistor d2499 getting too hot when the tv is operating? If it is normal or not?


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

Jul 31, 2016 | Televison & Video

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What type of automatic voltage regulator or voltage amperes will match or compatible to my crt kolin tv?


Normally; 90% of CRT TV brands circuit are designed to work with 110VDC; except for some Sony Trinityron model sets works at 135VDC. You have to refer the schematic diagram to your TV to get detail about the exact working voltage. Anyway, it should be around thei 110VDC itself. You can check it for this working voltage. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Jun 22, 2015 | Televison & Video

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Magnum 20lnc


So is this a television or a CB radio? You have it posted as both

Apr 09, 2014 | Televison & Video

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Samsung tv no led indicatior glow.. voltage regulator 3s125r have a primary voltage and secondary no voltage


if no secondary voltage at the regulator that was mean the regulator is bad which need replacement.the output supply will not pass through to the other circuit which turn on the tv.

Aug 17, 2012 | Symphonic ST420FF 20" TV

2 Answers

When I turn my KV-34XBR800 on, the picture will not come on and the standby light keeps on blinking 7 times each time.


Hello
Seven blinks of standby led in Sony sets denotes a High Voltage Shutdon proble. It is a self diagonosis process of the microcomputer Ic inside it, which senses the high voltage and shuts down the whole system to prevent it from further damages. The high voltage means that not the high line voltage of your househod supply, but the voltage inside the circuit board of the TV exceeds more than normal. Your tv, being 34", have a high tension voltage of 32,000VDC at the final anode of the picture tube. This voltage depends on the main regulated voltage goes into the circuit board from the power regulator system. There is a power regulator built sytem inside your TV, to regulate the voltage send to main board, which bears the Line Output Transformer [LOT], which in turn generated the above said high voltage. The normal regulated voltage going to board may be around 135VDC, to a 34" tv. Even a rise in, say, 2 voltage more than normal may cause high voltage to rise up considerably high enough to get it shut off. Soney sets are normally have STR regulated power supply system. It is very accurate and durable. The main fault comes to it is soldering trouble. The above said STR regulator may rise to as high as 90 degree centegrede when working. Repeted heating and cooling, make the soldering on its legs to get loose contacted; causing improper regulation process. Your tvs case must be so.
You just open your TV, and find out the regulator section inside it, where the AC input voltage goes into. Just pull it out and resolder all suspected points by applying a little more solder; as exact bad solder point is very difficult to locate. We in service field also does this. 90% sure that this will retify your problem.
Take proper care before opening your TV. Keep in mind that you are going to work with an electrical equipment, which have as high as 32,000VDC poins are inside it while working. Take all precautions. Keep children away from you while you works. Never allow them even stand beside you Ok.

Nov 09, 2010 | Sony FD Trinitron WEGA KV-34XBR800 34" TV

5 Answers

Help for TCL Brand of tv


I WANT THE SERVICE MODE CODE FOR MODEL NO: DP21E101 TCL TV 21"

Jun 15, 2008 | LG 30FS1D TV

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