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Larry Dillon on February 16, 2007 6:02 PM
I may be able to get my hands on a 51HW40 and thats the exact chassis as the one you have so the circuitry should be just about the same.
Ask again in a day or so. I will have it then.
dans_repair_service on February 16, 2007 7:07 PM
The service manual for the 57hw40 and the 51hw40 are the same. I'll forward to Larry.
Dan
Larry Dillon on February 16, 2007 7:41 PM
I am getting one Dan Thanks
kurto1 on February 16, 2007 8:10 PM
Ok.... thanks a lot.
jacktumprime on February 19, 2007 4:43 PM
I need some advice with the d board: as you know I am trying to repair a KP-57hw40. In order to make for a quick fix, instead of trying to find
where the problem is on the d board (already known the d board is the problem) I am going to order a new complete d board. However, the
only place I can find it at is selling it for over $400. Doing a little browsing, I found a d board for the KP-57WS500 for almost 1/4 that price. I
am pretty sure these are the same d board as they carry the same sony part #, so would there be any problems if I purchased the cheaper one
instead of the one listed for my model? Also, if I can use the cheaper alternative, are there any other sets that use the exact same d board?
Maybe I can find an even cheaper alternative.
Larry Dillon on February 19, 2007 4:58 PM
If it has the exact same part number, should not be a problem.
DakotaFox on February 24, 2007 4:29 PM
Hello,
I have a Sony KV-32v42.
The picture has started to collapse to the top of the screen then fold over "backwards" occupying about the upper 2 inches of the screen. It
will usualy stay this way for about 30 seconds to a minute then the screen will go dark. When it does show a picture it is usualy not for any
longer than a minute. Usually immediately before and during collapse the picture will show what appear to be retrace lines.
It started to die about a week ago. At first if I powered it off and on it would stay on. Now it doesn't seem to matter if I cycle the power or not
sometimes it comes on and dies as described above or it doesn't display any picture at all.
The sound works fine throughout the entire picture drop out and even when the picture doesn't respond at all the sound will work good.
It doesn't seem to be displaying any usable code. When I turn the set on, the TV clicks, there is a buzzing hum noise for about 0.1
seconds, and then the picture will come on. (The TV has always made this buzzing hum noise immediately after turn on, it lasts about as long
as it takes you to say the word "thrum", I had assumed that it was the degausing coil being activated.) The red standby light blinks at
approximately 1 hz until there is the sound of a relay click then the picture comes on. When the picture drops out it does not start any
blinking cycle. I have noticed that the light will blink until the second relay click, sometimes that doesn't occur, I have waited for over a
minute (counted seventy regularly spaced blinks) before I cycled power again.
I have tried whacking it with power on as an easy search for cold solder joints. It didn't seem to make any difference.
I am an Electronic Technician but I am not in the consumer electronics field. I don't regularly work with CRTs but I am familiar with high
voltage circuitry and safety precautions that should be taken with it. If you suggest particular components to check please let me know where
I can get ahold of a component placement diagram or drawing so I can find them.
I would like to fix it myself if possible because: the nearest SONY repair shop is over 100 miles away and the local TV shop doesn't work on
SONYs; our TV cabinet is designed for a 32 inch 4:3 aspect ratio TV; and with the signal off of the satellite system the picture doesn't seem to
be much different than the HD TV's until you slide up close enough to see the pixels. 1K to 2K dollars seems like an awfuld lot to spend for a
new TV that Doesn't seem to show a whole lot better picture than I had been receiving.
Any Help would be greatly appreciated.
Thank You for your time.
DakotaFox on February 24, 2007 4:29 PM
Hello,
I have a Sony KV-32v42.
The picture has started to collapse to the top of the screen then fold over "backwards" occupying about the upper 2 inches of the screen. It
will usualy stay this way for about 30 seconds to a minute then the screen will go dark. When it does show a picture it is usualy not for any
longer than a minute. Usually immediately before and during collapse the picture will show what appear to be retrace lines.
It started to die about a week ago. At first if I powered it off and on it would stay on. Now it doesn't seem to matter if I cycle the power or not
sometimes it comes on and dies as described above or it doesn't display any picture at all.
The sound works fine throughout the entire picture drop out and even when the picture doesn't respond at all the sound will work good.
It doesn't seem to be displaying any usable code. When I turn the set on, the TV clicks, there is a buzzing hum noise for about 0.1
seconds, and then the picture will come on. (The TV has always made this buzzing hum noise immediately after turn on, it lasts about as long
as it takes you to say the word "thrum", I had assumed that it was the degausing coil being activated.) The red standby light blinks at
approximately 1 hz until there is the sound of a relay click then the picture comes on. When the picture drops out it does not start any
blinking cycle. I have noticed that the light will blink until the second relay click, sometimes that doesn't occur, I have waited for over a
minute (counted seventy regularly spaced blinks) before I cycled power again.
I have tried whacking it with power on as an easy search for cold solder joints. It didn't seem to make any difference.