Question about Mitsubishi VS-45603 45" Rear Projection Television

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Mither board shorted by leaking picture tube

Any ideas how to replace? where? how much?

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Would need to know which Board youre referring to either the main or the signal. You can go to the link that I am posting and leave them an email with your model number and what board youre looking for. The parts are discontinued but they have alot of sources and they also provide free tech support. Heres the link.
http://servicemanuals.vstore.ca/

Posted on May 17, 2008

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After turning the tv on the colors are reddish and slow to conform to the normal color tones. i have a 36" toshiba flat screen tv


My first concern would be that, the picture tube is going bad. The problem you describe, tell me one of the color guns is shorting. In this case I would think the green gun is shorting. There are three color guns in the neck of the picture tube. They are red, green, and blue. Most of the time the green will short as it is powered heavily in most TVs. The next thing to check, is the small board connected to the picture tube. Look for any and all bad grounds on this CRT board. This is another big problem in all Tube type TVs. On this small board there will be three color output transistors, and resistors. These will many times run very hot and will create bad grounds over time. Check and resolder as necessary. If the CRT board does not fix your problem, replace the TV. Picture tubes are very expensive and will not be feasible for replacement. Search for a new TV. Thanks for asking and show all hands of support!

Jun 26, 2011 | Toshiba 36A43 36" TV

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I have a 65''hdtv philips i just moved and found some of the liquid from the blue light on the board. i blew a fuse i just need to figure out wheather it is a 5 amp or .5 amp any ideas


It should be marked on the end of the fuse in very small letters and on the top of the circuit board--also on top of the board will be a location number for it---Give me the exact model number and the location number and I will try to locate the value and part number.

You understand the liquid is Glycol and very toxic?

It will damage and short any parts it gets on and only water will remove it. If you get it off wear rubber gloves and do not get any on your hands etc--If replacing the fuse lets the set work--

You have 2 choices---remove, drain and reseal the leaking tube or cut a piece of cardboard and insert it above the boards but under the tubes to stop any liquid from getting on the boards.

If enough glycol leaks out the picture tube will go bad--it is in a sealed area and keeps the face of each tube cool.

REMEMBER THIS LIQUID IS TOXIC! IT IS LIKE ANTIFREEZE BUT MORE CONCENTRATED.

IF this information helped you rate this solution as I do this here for free.

SD TECH

Dec 11, 2009 | Televison & Video

1 Answer

HELLO OUR 53" PANASONIC REAR PROJECTION TV JUST WENT RED LAST NIGHT AND THEN WENT OFF AND IT WILL NOT COME BACK ON ANY IDEAS. IT TRIEDS TO START UP WITH A BLINK AND THEN OFF AGAIN


This model TV has a gasket on the red picture tube that faces down. The coolant leaks from between the picture tube and the lense assembly. When this happens the red tube over heats and shorts out internally and usually cracks the glass.You will probably find coolant all over the circuit board if you open the back panel of the TV.
Call a good TV Tech to repair this. It will cost over $500 if the picture tube is still available.

Jul 30, 2009 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

Picture tube gel leak


The best way to clean it is to remove the board completely and wipe up as much as possible, then use qtips with rubbing alcohol to remove the left over residule the alcohol will dry quickly, but still allow the board to air day a full 24 hrs before reinstalling it in the TV.

Aug 16, 2008 | Televison & Video

1 Answer

Vizio l32


It may be Connections on the signal or power supply board OR sometimes a short in the picture tube.If the picture tube is shorted it can be cleaned using a CRT restorer. This will most times buy you a few more years of service. Connection problems on the boards is a pretty easy fix for most techs

Jul 17, 2008 | Vizio L32 32 in. LCD HDTV

1 Answer

Toshiba 50H81 Power but no picture or audio


its possible that flood leaked on board from a tube leaking.
clean the area and scrape the burnt area really good so that it won't conduct. then make a jumper from some small wire to the areas you need. check tubes on the bottoms of the metel areas not the crt for something wet... if this fixes your problem then cover your board with a plastic or foam sheet so that it drains forward away from the board. also when you find what tube it is, you may want to ask ways to fix it or how to keep it from leaking.
but if its not a leaky tube then you may have had lightning or power surge. may want to go ahead and check all parts connected to that area for a short. just to make sure there isn't another problem before you start it up.
good luck let me know.

Apr 16, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

I have a Samsung projection screen television and when I moved it some liquid came out of the blue picture tube. I believe the fluid got on the circuit boards and caused it to short out. I tried to dry it...


Best case scenario, The blue crt could be fixed and refilled, and the board only burnt a trace on the board, a chip or resisitor or the like. I worked on televisions for a couple years in a small shop and had seen exactly this problem. We replaced the board and crt, lined (converged) it all up, and the cost was near $300. Probaly a good deal higher now. You could call the local repair shop and run those two ideas past them and ask what they would charger to do that specific work.

Mar 31, 2008 | Televison & Video

1 Answer

Need new green picture tube


You dont need a new tube. What you need is to repair the seal on your old tube and replace the CRT coolant fluid. There is a coolant chamber attached to the tube with long bolts with springs on them that contains coolant to prevent your tubes from getting hot. Yours may just need tightening, but I would replace the seal just to be safe as thecoolant can and will destroy your circuit board if its allowed to continue to leak on it.

Jan 15, 2008 | Samsung HCL4715W 47" Rear Projection...

1 Answer

No picture, no sound


First thing to check, would be that there is no oily liquid or residue around or on the printed circuit boards underneath where the picture tubes are. If there is, one or more of the tubes are leaking out the coolant and the seals will need to be repaired as well as the board, if it is not beyond repair. If that does not work, check out the power supply voltage . Check to see if the horizontal output transistor is shorted, or that the convergence Ic's are not causing the set not to start up. Good Luck

Jul 15, 2007 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Tv shuts off - sony kv-32v40


They are very relevant because you might have a high voltage ark from the output transformer or a shorted picture tube,the ark or high voltage leak you might not see but the shorting of the picture tube you will when it does it,being careful remove the back cover and leave the back open,turn the tv on and wait for the moment the shutdown takes place and look at the neck of the picture tube and thru the glass of the tube you might see the moment it shorts out and the set shutsdown,if you see something in the neck of the tube is because the tube is bad,take a look at the conections in the crt board maybe one of them is loose,the arking or leakage from the output transformer is dangerous and it should be observed from a safe distance(10 feet),if you notice something in the output transformer he will need to be replaced,both situations involved high voltage areas and if you are not too familiar with tv service you should get the assistance of a servicer.It is a good idea to resolder the main board if the two possibilties do not show or when the main problem is corrected.Let Us know how it goes or if you need more information.

Oct 31, 2006 | Sony KV-32V40 32" TV

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