Question about Sony Grand WEGA KDF-50WE655 50" Rear Projection HDTV

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I have replaced the lamp.Now the lamp wont come on and tv shutts

Hi
I have repalced the lamp.I also took the optical block out and checked for thermal sensor it is ok.Now the lamp wont come and when tv turned on shutts off.4 blinks and tv shutts off after each try.Please kindly advice me

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Did you replace the lamp cover after replacing the lamp? Make sure the cover is properly installed.

Posted on Jan 24, 2009

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I HAVE SONY SXRD KDS-60A2020 I REPLACE A NEW LAMP I TURN TV ON AND I STELL READ REPLACE THE LAMP ON THE TV SCREEN


we have replaced our optical block twice, we changed out the lamp twice-first time it exploded inside the tv??? now the tv doesn\'t work for cable but we can use the piss poor cloudy optical block again using hd antenna or thru xbox internet - this tv is GARBAGE end of story! I will NEVER purchase a SONY product ever again - they are basically all the same like our Food industry they just slap some other company name on the final product - we were ripped off bad for this tv paid 3,000 piece of garbage!!!

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REPLACING OPTICAL THERMAL BLOCK


The Optical does not on its own have a "Thermal block" some Sony sets do have a thermal fuse connected to the Lamp---on most (What is model number?) that will result in shutdown and a 3 blink error code on the front of the TV.

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I just recently changed my lamp in my hitachi 50 VF 820 and the screen has a large blue spot on it. I have done it before once or twice and all went well. Did I possibly put the bulb in incorrectly or is...


No. If the set turns on and you have a picture, the lamp is installed properly. Most of the time the optical block is the issue. The lamp shines directly into it. If the picture was good before the lamp was replaced, it is possible that that replacing the lamp might have dislodged some micro dust build up internal to the optical block and it landed in a concentrated area causing the red and green lcd panels not to pass light through as bright as the blue giving you a blue spot. Unfortunately the optical blocks are not designed to be taken apart to clean. Replacing the optical blocks are expensive. Most costing in the area of $700.00 to $1200.00 for the part. It also is a major tear down to get to the optical block to replace it. Once upon a time Hitachi had a couple of recalls on their optical blocks for various models. I do not know however if this qualified.
I hope this helps,
Skyassoc

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Tv won't turn on 4 blinking led


Hi,
Red led blinks 4 times is an error code that shows that fan is not running in tv, check fans connections and make sure all are plugged properly.
Thanks.

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2 Answers

How do I change the optical block in a sony tv


Disconnecting wiring from power supply block

This step may be optional, if power supply block must be transferred to purchased replacement optical block. Undo the blue plastic-coated wire holders to release the two wire bundles. Disconnect the connectors shown with the dotted lines in the photo below. One, which presumably provides power, is disconnected directly from the power supply block, and the other is a regular wire connector.a837b7e.jpg
moz-screenshot-2.pngDisconnecting the optical block fan wires

Disconnect the optical block fan wire connector:
442a9a3.jpg

Disconnecting the wiring from the optical block circuit board (C Board)

Carefully pull up on the three wire connectors directly connected to the top of the C Board:
733626a.jpg

Final wire disconnection from C Board

Remove the screw and gently pull the blue ribbon ribbon cable out of the side of the C Board:
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Your optical block should now be entirely free of the TV and ready to ship. I recommend adding specific protection for the projection lens, then sealing the whole unit in a bag to prevent infiltration of dust or packing materials, then carefully packaging it with substantial padding.

Removing the projection lamp (in cases where you are installing a purchased replacement optical block)

Loosen the hex screw next to the projection lamp housing, and pull the lamp and housing outward from the metal clips.

Picture of replacement optical block for KF-60WE610 (courtesy John Setar)

Here is a picture of a replacement optical block for the KF-60WE610. Note that some parts of the old optical block need to be removed and installed on the replacement block.

moz-screenshot.pngmoz-screenshot-1.png

Jan 25, 2010 | Sony Grand WEGA KDF-60XS955 60" Rear...

2 Answers

Faint blue "cloud" on upper left screen duriing viewing


I hesitate to tell you this for fear of a bad rating from you, but it is likely the optical block is the source of your problem. Sony was covering replacement of the optical block for this unit until June of 2008, but that warranty extension has expired. I would suggest you contact Sony customer support at 800-222-SONY to see if they will allow for some type of accommodation to cover either the parts, the labor or some portion thereof. Sorry!

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GHOSTING


Hey joseph, actually replacing the optical Block is not necessary at all, all you need to do is get into the "Service Mode" of the Tv and change a few setting around, did it a few weeks ago and now my TV looks perfect, no reason to waster $1200 as sony is trying to get over on all us consumers.

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1 Answer

Please help-question about sony optical blocks


Talk to Sony about the blue blob issue, they may still replace the optical block for free.

If not, fix the blinking light TV.

Blink Codes
3X - Lamp cover not installed correctly, usually after lamp change, or cover detect switch is bad.
4X - Check fans (one or more failed to pass RPM test during power on diagnostics)
5X - Lamp ballast (power supply)
6X - Usually the thermal fuse - usually from inadequate air flow (fans dusty)

All other codes usually require a trained technician to diagnose and repair.

Oct 29, 2008 | Sony Grand WEGA KDF-60XS955 60" Rear...

2 Answers

Replacing Thermal Fuse in Sony Grand Wega KDF-E55A20


The PROPER way to replace the thermal fuse is to remove the optical block first. There are at least two recessed screws holding the block in place. BE VERY CAREFUL removing the block as it is very easy to tear/rip wires when doing so. I cannot emphasize enough NOT TO JUST THROW THE NEW THERMAL FUSE INSIDE THE CABINET!!!! The thermal fuse is a safety device mounted near the lamp to prevent overheating. Those that choose to just let the fuse "sit out in the open air" are risking greater failures and the possibility of fire.

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1 Answer

55 in Sony KDF55WF655 Goes to standby and red light blinks 4 times


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