Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

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Didnt answer my question.

Thanks for the info but I knew that much. Now could anybody tell me HOW to replace it and how much it would cost me to replace it and CAN I even replace it myself........... thanks

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Re: didnt answer my question.


cost for do it yourself is about 30 -60 dollars

Posted on Dec 17, 2007

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Looking to replace the main cooling fan in my KDF-60WF655. Anybody know where I can get one?

I will not ask why you want to replace it (let me know) but other than Sony directly contact Andrews Electronics (800 number or internet) in Los Angeles who ships all over the place.

If you do not have a part number contact research there and they will provide one and tell you cost for part and shipping.

Mar 12, 2012 | Sony Grand WEGA KDF-60WF655 60" Rear...


This fix was too easy thank you for posting this. I got this tv from a friend...

FL231. FUSE.... The RCA ITC222 chasis has a common problem. and it not all that difficult to repair. Does your rca projection tv have read blue and green shadows? Does it have bowing in affect on the top and bottom of picture? when you turn it on does some thin red green and blue line bow in from the top then go away. The main question to determine if you have the fl231 fuse problem is if you go into customer menu then setup do you have the "CONVERGENCE' option. If you do not. then i suspect you have this problem. In the manufactering of these sets Lead free solder is used. now there is great debate over the use of lead free. connection tend to be more brittle. cracks develop around the solder connections of the high voltage flyback transformer. this very small crack set up oscillations in the cuicit with a 400 milliamp fuse. THis fuse cant take it. When this fuse blows the processor then does not know its a projection tv with three projection tubes. it thinks its a crt tube tv. and crt tube tv dont need "convergence" so it removes the convergence from the set.

TO REPAIR... 1. Warning. this set can generate leathal dangerous voltages even unplug do not attempt if you have no experence with electronics.
2. Remove the back. there a number of torx 20 screws.
3. what you will see is a number of circit boards There will be one on the right and one on the left. the one on the right is the small signal board. the one on the left is called the power deflection board. it has a large black part with a big red or black wire coming from the top, this is the flyback.Next to the flyback on the right of it there will be three small rectangular componets tan or brown in color. these are fuses. the one in the middle is the fl231 fuse.
4. getting to this fuse can be difficult. these two cuicit boards sit on a tray that is removable. to remove this tray it is pulled out and up. BUt watch the wires.loosen the wire tyes.
5 when you get the tray up the bottom side of the board can be accessed
you will now have to unsolder that fuse. one side of this fuse is under a plastic part of the tray. i have found the easest way is to cut away the plastic to get to it. if you dont want to do this you will have to remove the board. only remove half of the plastic brace
7 RESOLDER FLYBACK CONNECTIONS simply heat up and add a little solder
8 reassemble set. make sure you examine the set for loose connections.
9 and remember "BE Careful'

on Feb 28, 2009 | RCA R52WH73 Projection Television

1 Answer

Dear sir, The diagnosis by you on the problem is correct. Confirm by sony that we have an optical block and bulb problems. Need to replace both. Where can I get a replacement parts for optical and...

Please confirm tv model number as question shows it is Sony KF-E50A10
Model number info is very important to provide you correct and helpful info.

Mar 18, 2011 | Sony Grand WEGA KFE50A10 50" SDTV LCD...

1 Answer

Hi, I have a Samsung HCM422W projection Televison and my convergance is not properly adjusting. It will not allow the red to fully adjust. Along with that it seems like the picture is kinda concave. Im...

MOST LIKELY, if convergence will not adjust in some part of the screen and or is bowed looking:

You need to locate the two convergence chips (usually STK-392-020 OR -040 THAT this set should use.

Most of these smaller Samsung sets they are located on a small circuit board mounted above the main boards--see photo of typical chip---should be two side by side.

If they are not located on that separate board, it will be much harder to remove/ replace them.

If the photo or this information helped you rate this solution as very helpful as I do this here for free.





Aug 16, 2010 | Samsung HCM422W 42" Rear Projection...

1 Answer

I have a sumsung 50" DLP. After grinding, cracking, and popping it stopped working. I opened up the side compartment to change the bulb. Bulb is intact but there was broken glass that I couldn't tell where...

if the bulb is ok your colour wheel is broken you must open up tv take out engine kleen all glass and replace colour wheel this repair will cost about 200 dollar

Jul 28, 2010 | Samsung HLN5065W 50" Rear Projection...

1 Answer

Yes I just talked to you about a convergence issue of a double imaage redish hue you said there was like two circuits I would need to replace the model number of that sony is model:KP-57WS510 ...

Convergence out chip number is STK392-560 as shown in below image and it is available in Part Store for $38
TV needs two chips.
Hope this info will help you, let me know if you have additional question.


Jan 04, 2010 | Projection Televisions

1 Answer

Mitsubishi Medallion power problems.

The set is going into shutdown because a problem has been detected inside. This prevents further damage. It could be anything from a shorted horizontal output transistor to a defective convergence IC. Without examining the board and taking measurements inside, it will be difficult to near impossible to diagnose this remotely. I would suggest that you invest in a detailed repair estimate that shouldn't cost more than $100 and report the results here. With that info, we should be able to walk you through the actual repair.


Jul 09, 2008 | Projection Televisions

1 Answer

How can I fix my 56" widescreen jvc

ok. let start this process. are the colors seperated? RED GREEN BLUE Then this is suspect will be a convegence problem. which 85 percent of the time is what is know as convergence ic chip failure. a electronic part replacment. are you a tech or know how to solder. any experince would be helpful but i would have to admit this really is not a job for non techs there are setup issues. at our shop the cost of such a repair averag 135 to 250

Jan 29, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Projection TV is Dimming...Getting darker with every hour its on

hi rouge. my name is mike wilson. i have a panasonic 50 in that has the same problem as you had on your tv. the screen got halfway dark today. did you ever get yours fixed, if so, would you mind telling me what the problem was? my problem is listed (by mistake as a 53 in) on 04/04/07. thanks in advance

Dec 03, 2006 | Panasonic PT-56HX40 56" Rear Projection...

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