Question about Mitsubishi WS-55907 55" Rear Projection Television

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Power converter and regulator

Do you have a schematic of the TV?

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Yes

Posted on Nov 13, 2008

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Schematics to power supply regulator section to many popular brand TVs are given. Search the site with the STR number to your TV.

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To know more about this, you have to download the repair manual to this set. Its schematic diagram section have all details. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box.
http://electronicshelponline.blogspot.com/
Power supply regulator schematics to many popular TVs are given.

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Check and replace damaged component/s at it main power regulator [SMPS] circuit stage. If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/ Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. Power supply regulator schematics to many popular model TVs are given.

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What is the number of str ic,regulator power supply a 14 inches sharp tv. model primo sharp tv 14 inches


Try the site linked here. It has schematics of power supply section to many popular brand TVs. http://electronicshelponline.blogspot.com/ Hopes it will help you to check out the number of the STR.

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Sanyo crt tv model st-21cf1 all burned resistor....may i ask what is the value of resistors


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Please help MyTV won't power on!


It just blew it's power supply. There could be a fuse or reset inside but not likely. It likely needs a voltage rectifier, voltage regulator, or a diode or a resistor, perhaps an IC. Find a factory authorized technician (they have schematics and oscilloscopes)

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I need schematic for my GR9D adio amp. i am converting this amp for multi use. i need to know where the inputs are and spkr outputs are.


Cool I wanted to do the same thing with the board.I havent had time to try it, but here it goes. The schematic can be found here. The file is named Philips-GR9D.rar and is a pdf ~ 44mb for the whole schematic for the tv. Check around page 40 or so for the schematic. Its in another language though. Seems you should only need 12v (regulated) and a variable audio level seeing the amp looks at a fixed level. Connector 1401 (1-5)
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  2. mute
  3. Right Channel Input
  4. +12 volts
  5. Left channel input
Connector 1449 (1-5)
  1. Right channel out
  2. Ground
  3. Ground
  4. KEY (No pin)
  5. Left channel out
Connector 1418 looks to be an extension of 1449 and from what i can tell the lower "divided" part of the board (eg the high voltage side from connector 1400 to the transformer) appear to be power for the audio circuit derived from around the fly back area of the tv. (around 160v i presume). In other words I think you only need connector 1401 and 1449. The only other thing seems to be that it cannot be bridged (for subwoofer use) as is (sharing a common ground on the output). Wish you well.

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3 Answers

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One of the most common type is the 3 pin - 1 amp voltage regulators in a TO-220 package, they are the 78xx positive regulators and the 79xx negative regulators. The xx denoted the voltage output of the regulator.
I don't know what type of regulator is used in the APN 6003, if you can obtain a circuit diagram it might help you.

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