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Do you sell the main circuit board? - Epson Perfection 4990 photo scanner

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Fixya doesn't sell anything. We try to answer questions. Epson service centers may be able to sell you a main board for your scanner. It will be expensive, likely more than a new scanner.

Posted on Apr 18, 2015

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Posted on Jan 02, 2017

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What does a main control board cost for the Emerson LF320EM4 32 in cost ?


ShopJimmy lists several models for $32-$40 (compare sticker numbers on the main board, but presently all but one are out of stock. They also sell a replacement EEPROM chip for the board for $15; evidently it is a common failure point. Replacement of the EEPROM requires the equipment and soldering skills to change an SO-8 surface mount integrated circuit.

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Tv is dim and can't brighten


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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I have an Element tv that has no picture, good sound but basicaly a black screen. Do i need a didgital board or a main board?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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1 Answer

Dell 2407wfpb won't turn on. No lights, nothing. Pic of back side of main circuit board below. Is this worth fixing? Matt


Matt Mathew,
The board looks burnt. You could possibly do a search on ebay for this board. Users do sell monitor parts. Dell does not sell monitor parts.
Thank You,
Dell- Jesse L

Nov 07, 2015 | Dell Televison & Video

1 Answer

I am looking to sell my internal boards of my Viewsinic N4280P-1M TV. It suffered a cracked screen due to my 2yr old throwing the remote at it, but everything works great. Do you know where I might...


Hi Christopher, where are you located? I have the same TV and am looking for the base stand and original remote if you decide to part it out.

Dec 30, 2014 | Televison & Video

1 Answer

I need Q1 transistor for 135 hobart welder


The transistor is mounted on the main circuit board, you cannot buy the part from Hobart or Miller, they only sell the complete circuit board.
If you can read any part numbers from the transistor you can purchase the part from a electronic parts supplier.

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1 Answer

Who sells the main board for this T.V.


When something goes wrong with a television set, chances are that a TV circuit boards is to blame. A television functions via a number of circuit boards, which serve different purposes to bring images and sound to a TV. Problems with circuit boards can often be solved by simply replacing the board. This is generally much more cost effective than buying a new TV. There exist several companies which provide the various boards for the various televisions and other related models as well. One may go to any professional related to the TV model and also Google the same for the utmost alternative for the same.
https://www.structuredsettlement-quotes.com/

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Horizontal Angle reading on 56-CST205 tOTAL sTATION NOT CHANGING


if your horizontal angle reading is not changing, then either you have the horizontal hold on, where you can rotate the station and the angle readings remain the same, or You have a problem with the horizontal encoder or main circuit board, probably the main circuit board. If it's a hold button then just press it and things should go back to normal. If not then you'll have to bring it to a service shop. You might be able to get CST to sell you s new board, though most likely not since they were bought by Bosch, but the encoders need realigning. That requires an o-scopes to bring the encoder reading in line.

Mar 19, 2013 | Cars & Trucks

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Hi, Im working as a electronic technician in a garment factory.i have JUKI 1900 bar tack machine There's a fault in main circuit board. When I press the ready button, pressure foot goes up for a while...


The problem with working on this kind of equipment is a schematic--usually not available and same with critical parts---they want to sell boards only and do not stock individual parts in most cases.

Jun 07, 2012 | Televison & Video

1 Answer

Mine has 7 red blinks and wont come on. i pulled off the back and found a fuse blown on left circuit board, i can unplug the left circuit board from main circuit board thats in middle and tv will act like...


No, your done. Now replace the Y-Main, that's the large one you found the fuse blown on and replace the two buffer boards that the Y plugs into. Those are the two at the far left. The part numbers are on the boards. So that's 3 boards you will need. sometimes they sell the buffers together as a pair which is cheaper. DO NOT buy from second hand resellers. Always buy new when it comes to plasma sets.

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