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CRT Board Is that expensive to replace?

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My TV picture disappears and the audio disappears for a couple of minutes then it comes back.
The green power light stays on the whole time. The lamp light does not turn red.
What could be the problem?

Posted on Oct 18, 2008

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A crt board can cost from $25 to $40, the problem is that crt board should be tested before replacement, even if it is the most likely cause, there is always possibility that there is also something else (tube, main pcb etc.)

Posted on Jul 08, 2008


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Require Service Mode

In cathode ray tubes, they will eventually wear out or have a short in one of the solder points in the board that triggers a failure message of service required. Replace with LCD TV ( it is less expensive) or if you love the CRT call a TV tech to repair. The average person cannot diagnose issues of this nature.

Mar 25, 2015 | Televison & Video

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My Sharp Aquos has lost it's picture brilliance on all channels.

Try adjusting picture settings from tv menu, if this does not work your tv has a bad crt board in need of replacement

Jul 29, 2008 | Televison & Video

1 Answer

Tv flickering

A flickering screen and or lines and or black bars at the top and bottom of the screen are signs that you need to replace any small electrolytic capacitors that are near the horizontal and vertical output transistors. any that are on the board on the back of the CRT and possibly capacitors in the high voltage section of the board. This is a cheap maintenance that is wise to do before any expensive parts go.

Oct 16, 2013 | Curtis-Mathis Televison & Video

2 Answers

Green screen, shutting off

thats a common issue thats usualy caused by the Green CRT drive board if the green works then shuts off. But if it never comes up even for a minute then its probably the green CRT iself that you need. You can get replacement CRT and CRT drive board for your model from

Mar 22, 2013 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Ct-v14mtfd-gb combi tv. This has hardly been used since new but has lost the blue gun! Is this a common component fault? And which is the suspect part?

If this is a new TV then it is not possible for the gun to fail which means that your CRT- the picture tube has failed . This being the heart of the TV is the most expensive part to be replaced and specially a these times when LCD/LED TV's have come out cheaper.
SO please check CRT board , check the voltage at all the guns, check the drivers, check for poor solder joints inthe CRT board.
If not since your TV is new try for warranty claim.

Aug 22, 2011 | Akai Televison & Video

1 Answer

My screen has no red color. I assume the red color gun has gone bad. Is this it? How expensive to fix? Is there a do it yourself cheap fix?

Its most likely a problem with the Red CRT drive board. If the tube were to fail you would have either a red screen with lines, or the set would shut down. Often its as simple as a bad solder joint on the CRT socket on the Drive Board. I would check the board very carefully for signs of bad solder such as dull ( Indicating Cold solder ) or actual cracks in the solder. If all solder looks good I would try replaceing the Drive board.

Jul 02, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

50sbx70b made sizzling noise then quit

Sizzle cound be crt arching or hv transformer. look for burn marks on transformer on deflection board. unplug set and remove crt boards from the crts and see if set will turn on. if replace arching crt. expensive. not to be attempted by amature.

Jun 27, 2009 | Hitachi 51F59 51" HDTV Projection...

1 Answer

The colour has gone wrong on my tv it show the the green and blue pigment but not the red. wil this be an expensive repair?

This problem could be as simple as poor solder connections on the board that sits on the back of the CRT to a defective driver transistor for the red gun to a bad picture tube. It is possible that this is an inexpensive repair (solder connection or defective transistor) or expensive (bad tube). If you can solder, try resoldering the CRT board connections and see if that resolves the problem. If not, then have a shop take a quick look. They will be able to determine whether the CRT is bad or not.


Mar 09, 2009 | Toshiba 28N33 28" TV

1 Answer

Advent 32" tv flat screen

It's likely one of two things. There are drive transistors on the CRT board which control the output to the guns, the one that controls the red gun may be open, also check this board for burned resistors. It could also be a bad picture tube although this is less likely. If it is the tube, replacements if available are fairly expensive.

Oct 17, 2008 | Recoton Advent Advent Q2035A 20" TV

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