Question about Samsung HCM4215W 42" Rear Projection Television

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Please advise I opened my tv because I am having the common problem I see on this site. Upon opening I noticed 3 tube like stems that come from under the screen. The have boards connected to them and what not. One has actualy broken off from the glass area. Is this tv done for?

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Re: Please advise

The tube is broken it will need to be replaced and reset

Posted on Nov 10, 2007

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Green light bulb that projects light to my screen I believe is leaking and shuts down the tv after 20 minutes

That is not a light bulb. That is a Cathode Ray tube. You are leaking tube coolant and that means the seals on all 3 cathode ray tubes are going bad. This is something that can be repaired but you need a qualified tech to do so or the TV can be easily ruined.

Jul 11, 2015 | Mitsubishi WS-65413 65" Rear Projection...

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Hitachi rear projection model 57f59a makes loud popping sound from time to time

Yes and it is common---the set uses 3 picture tubes and where the high voltage (well over 10,000 volts) goes into the side of each tube via a spark plug type wire (with good reason) they completely seal the rubber clip that inserts the wire into the side of the tube.

You are describing almost perfectly when one of the tubes arcs around the anode (what the opening is called--2nd Anode to be precise)

Two things are going to happen--when it pops it can instantly burn the coating off of the offending tube's screen resulting in a burn mark--usually dead center and if red tube arcs the mark will be yellow(only red and visable in that area of the screen.

This damage is permanent once it happens-----Second is that it will arc hard enough to blow some other part out in the set.

let me know if questions.

Mar 19, 2012 | Projection Televisions

2 Answers

Tv comes own and popes about ten times. and it also goes off. blue light comes own and blinks constantly. what could the problem be?

there some problem with your power supply.there is some drive ic,fet or ic link problem. check voltages if there some of missing which is menstion on board .then use to check same line you must find out problem.

Oct 18, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Dark Picture no brightness

Sorry But your TV is Not DLP,it is projection it has 3 Tubes Red/Green/Blue Deflection Board for this
TV cost $508.35 {Encompass Parts Distrubtion} Has the Boards for this TV 1-800-638-3328

Jan 21, 2010 | Hitachi 51F59 51" HDTV Projection...

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My tv is only half a screen, why?


This seems to be a problem in your picture tube. Call upon the service personnel and they will surely help you out on this. Dont try to open up the TV panel yourself! That would be dangerous.

Rate me if this helps you.

Thanks - billa

Jul 12, 2009 | Projection Televisions

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My tv is showing alot of red with blue blotches across the screan

Your TV most likely has fone of two possible problems.

Problem #1 - Failure in the convergence circuits. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here are some photos of convergence problems.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.


TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.


2c07611.pngSolution #2

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from that includes replacement coolant, photos. instructions, etc.

May 20, 2009 | Hitachi UltraVision CineForm 55VG825 55"...

1 Answer

Phillips Model 60PP9100D/37

Its a common problem on this model. Most likely the HVG. Goto for a kit with instructions.

Apr 19, 2009 | Philips 60PP9200D Television

1 Answer


A snowy picture usually means a bad ground connection somewhere in the chain. Normally when this happens the behavior will change depending upon the channel selected. Have you noticed this at all? If not, then the tuner will require service or replacement. Please update this with any additional patterns that you can find and hopefully I can narrow this down a bit more.


Mar 16, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Jvc av-48wp30

Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs.

You can find more details and solutions here on Fixya at the following link below. Or click HERE


Aug 20, 2008 | JVC AV-48WP30 48" Rear Projection...

2 Answers

Blue crt shot

The coolant in the blue tube has no doubt congealed to an oatmeal like consistancy. Did you notice things like blue halos around things for some period of times. change the coolant. that should correct the blue. this is a common thing for that model as well as all TVs. Blue and green has this happen, Red seems to not have the same trait.

Mar 20, 2008 | Philips 55PW9363 55" Rear Projection...

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