Question about Sony KDS-R50XBR1 50" HDTV

3 Answers

Fan failure 1st I had the optical block problem.  Then 3 lamp failures.  Now intermittent fan failure issues.  The set turns on for about 1 second, then goes black and I get the 4 red blinks.  Had a tech out, verified fan failure.  Came back and the set magically worked. He cleaned out some dust.  Couldn't replicate fan failure at that time and now it's intermittent.  Tonight it won't turn on.  He's saying replace all fans since he can't isolate which fan.  This is such BS.  Many people are having this problem. Thx, Lewis

Posted by on

  • Anonymous Aug 25, 2008

    Wanna hear something pathetic?  Someone talked about using a bamboo skewer to move the fan blades.  I couldn't see the fan blades so I just blew real hard into the grate and it's worked ever since (no compressed air on hand).  Kinda dumb but worth a try.  Someone mentioned that the fans get "dead spots" and you just have to move 'em a bit.  Seems to have worked for now



3 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 23 Answers

Chances are it's the one large fan in the rear of the unit. That's the most common to fail. Easy to do yourself. A $30 part and 20 minutes total to do, unscrewing with a Philips screwdriver, replacing the fan, and putting it back together...

Part is:
Motor dc sff21c/c-np

Posted on Oct 01, 2008

  • Anonymous Oct 01, 2008

    This is a fan issue, most likely the large fan in the rear, lower left (from the back)...

    Here's the fix, I promise, it's EASY........

    Ok, I think I have the answer for the BIG FAN failure. I recently did a
    similar fix on the spindle of an xbox 360 and it is identical. Ok, this

    Open the back of the tv, locate the large fan (on the lower left on the back of the set.) unscrew the screen and remove the fan.

    Once the fan is removed, you will see the side with the model number and the other side is totally open.

    On the open side, pull...

    The fan will come off, into your hand, it is only held by magnets...

    You will notice a spindle on the fan and the other side has the magnets
    and the hole where the spindle came from (this is the fan motor).

    Clean both the spindle and the hole (motor) with a q-tip. The hole is
    smaller than the q-tip, but do the best you can to remove the old

    Get a bit of WD40 and lubricate the spindle and spray a touch in the hole.

    Put them together, reconnect your fan, test it on startup and thank



  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,071 Answers
  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.


    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Did that spindle broke off

Posted on Nov 15, 2009

1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Hello my name is Devin, I have a wd-65735 model and I just purchased it off of a friend and braught it home. He had told us from laying it on its side while bringing it home it said in the guide to let it...

Caveat: I am not a tech, I just read through the Mitsubishi service manual, and have worked on different model TV that I have owned (older model of this one) I am a little unclear on the second set of lights but I think the combination *may* indicate that the lamp fan is not starting (there are two fans though), if the blinking red is the status light. It is possible the connector for that got jostled during the trip, something fell into it from being on the side (wire or loose something) and is blocking it from spinning now, or a module unseated a bit,and is loose, or the lamp is no longer seated correctly (though the lamp light does not appear to be on) or none of these. :) These are just guesses.
Be careful if you open it up, due to potential for shock. Wear gloves, and power it down first (then unplug). Reseat any fan connectors.

Google: I used "wd-65735 status lights" to find a service pdf , it's for V39 chassis (several models)

From page 24 of Service Manual :

3. Error Code Operational Check Note: The TV must be in "Shut Down" and not have been switched Off, to perform the Error Code Opera- tional Check. When the TV is switched Off, the code automatically resets to "12" No Error.
Pressing the front panel "INPUT" and "MENU" buttons at the same time, and holding for 5 seconds, activates the Error Code Mode. The "TIMER LED" flashes denoting a two digit Error Code, or indicating no problem has occurred since the last Initialization.
Note: The front panel buttons must be used, NOT those on the Remote Control.

  • ThenumberofflashesindicatesthevalueoftheMSD(tensdigit)oftheErrorCode.
  • Theflashingthenpausesforapproximately1/2second.
  • TheLEDthenflashesindicatingthevalueoftheLSD(onesdigit)oftheErrorCode.
  • The Error Code is repeated a total of 5 times. Example: If the Error Code is "23", the LED will flash two times, pause, and then flash three times.
Page 24
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / WD-73735 / WD-73736 / WD-73835 / WD-73C8
4. Error Codes
The Error Code designations indicating malfunction, or no malfunction, are listed below:
ERROR CODES page25image3968
Most Likely Cause
No Error found
Communication loss, TV Micro - Engine (3.3V-ENG-SDA & SCL)
Engine Failure
Engine will not accept data (ASIC-READY signal from Engine is not detected).
Loss of 12V from PWB-POWER (Loose PE or PE2 connector); Bad Color Wheel (Loose J6 or J7 connector); Engine Failure
Lamp cover is open.
Lamp Cover Switch; Loose CD connector
Lamp turns Off while the TV is playing. Lamp failure
(Lamp Enable signal from engine is lost)
Lamp Cartridge Failure
Exhaust Fan failed.
Loose J4 connector
Engine (DMD) fan failed.
Loose J5 connector
Lamp temperature abnormally high.
Poor Air Circulation; Loose J3 connector
DMD temperature abnormally high.
Poor Air Circulation
Standby Supply Short is detected. (5VS or 3.3VS)
PWB-MAIN Failure
Sirocco fan failed (Lamp fan).
Loose J8 connector
Check for disconnected DVI cable between PWB-DM and Engine. (Engine pulls DVI pin 14 Low)
DVI Cable unplugged
PON-SHORT 3.3V switched supply short
PWB-MAIN Failure
Ballast communication problem (ballast to chassis)
Loss of 340V from PWB-POWER (PL or CJ1 connector); Loose FB or CJ3 connector; Ballast Failure
No LAMP-EN output from the engine to the ballast
Bad Color Wheel (Loose J6 or J7 connector); Engine Failure
Lamp did not turn on at P-ON sequence
(No Lamp inserted)
(Disconnected cable between ballast and lamp) (Lamp-Enable goes to DM but not to Ballast)
Loose CJ4 connector;
No Lamp Inserted;
HV connection or lead wire to lamp; Lamp Cartridge Failure
Code 34(1) - Lamp Enable is generated to activate the Lamp
Code 57(2) - Lamp Enable is generated during P-ON sequence, but no Lamplit signal is received from the Ballast. Code61(3) -NoLampEnableisreceivedattheDMandBallast.
Code 66 (4) - Lamp enable is received at the DM but not at the Ballast.
4. Error Code Log
The Error Code Log - may be helpful to retrieve the code for an error the occurred in the past. To access the Error Code Log: Press <MENU> <3-5-6-4>

Oct 27, 2014 | Televison & Video

2 Answers

No sound or picture. red timer light on. wd60735

Hi there,

This model as 3 LED indicator lights:

1) Power/Timer 2) Status 3) Lamp

If "STATUS" LED is blinking RED:

1) Internal Fan has stopped. These tv's require fans, to prevent overheating and causing damage.

If "STATUS" LED is solid RED:

1) Circuit failure (short)
2) Disconnected DVI cable, chassis to engine
3) No LAMP-EN signal from Engine to turn the lamp On.
4) Ballast UART communication problem.

If "LAMP" LED is solid RED:

1) Lamp Failure - Lamp failed to turn On.
2) Lamp is broken (e.g. burst or blown)
3) Lamp turns Off during P-ON

There is no data relating to TIMER LED being solid RED.

Hope this helps.



Feb 01, 2013 | Mitsubishi Televison & Video

1 Answer

3 blinking lights

If lamp did not cure it:

Look with lamp removed in direction lamp faces---look to see if the color wheel is shattered or missing pieces--common failure.

Usually but not always if Wheel is bad you heard before a high pitched or fan like sound when set was on.

The only other common failure is the Ballast which powers and drives the lamp----At the moment of turn on if the lamp lights briefly and goes out the Ballast is less likely to be bad.


May 17, 2012 | Samsung HLN5065W 50" DLP TV

2 Answers

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,

Jan 06, 2011 | Hitachi 50VF820 Projection TV

1 Answer

Looks like a black thumbprint blocking 1/3 of the screen. No LED's lit on front of TV. Started as black dots, and filled in almost completely. Initial lamp lasted 2 years. The replacement lamp lasted 3...

It looks like DLP chip is failing. It is installed on DMD board that in turn belongs to optical engine. Issue should get progressively worse. If you look at screen up close - you see that "tumbprint" consist of little small dark-gray squares, some of them flickering.
Cheapest solution - to replace DLP chip. instead of replacing whole optical engine.
This repair have to be confirmed (by running test patterns in service mode first) and done by professional.
Repair could cost aroung $400.
During procedure I would recommend to turn ceiling fans and other air blowing devices off. Single little dust speckle landing on the chip surface will ruing all effort and same amount of labor have to be applied yet again just to get rid of it (been there, done it).
Good luck.

Apr 06, 2010 | Samsung DLP HL-P5663W 56" TV

1 Answer

Our Sony Grand Wega model #KDF-E55A20 has going off (loses picture and sound)intermittently. The indicator light stays green when this happens. Picture and sound is off for about 30 seconds, then comes...

I think a new lamp will solve the problem. It may need a claeaning. This TV is known for optical block failures soon after a lamp replacement. Call Sony for details

Mar 04, 2010 | Sony Grand WEGA KDF-60XBR950 60" Rear...

1 Answer

Sony KDSR60XBR1 had lamp replaced march 09 then optical box replaced june 09 2 months or so after i turned the tv on and the picture looks like **** from all inputs. I did everything tech support asked me...

The Optical Blocks have been major problems in this Model Line. As far as I know they are still covering the cost to replace the Optical Block out of the original warranty that came with the set. Most of the issues with the Optical Block is either micro dust build up in the light path, (mirror, LCD panels, etc),
or a heat issue causing failure on one of the LCD panels with in the Optical Block.
As far as the Lamp is concerned, they will fail on average every 3000 to 5000 hrs of use.
I am not sure if I answered your questions but hope I did.

Dec 27, 2009 | Sony KDS-R50XBR1 50" HDTV

1 Answer

Starting to get some blu coloring around bottom left corner of screen.Did everything SOny "experts" suggested.Wondering if it bulb going out ?

It is not the lamp causing the issue at all. The issue is the light engine or sometimes called the optical block is failing and the blue will take over more of the screen as time goes on. The optic block is not a do it yourself type of repair. The one thing I would suggest is to look closely at your lamp door and the area surrounding it for warping and or cracking. Either one of those issues means that Sony will cover those repairs and possibly the optics block replacement. Heat damage is what usually causes the optic block failures as well. I have included a link directly from the Sony support website that addresses your model specifically. Make sure you inspect the lamp door and surrounding area as you may get a repair from Sony.

Nov 29, 2009 | Sony Grand WEGA KDF-60XBR950 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!

Nov 07, 2008 | Sony Grand WEGA KF50WE610 50" Rear...

4 Answers

Sony Wega 42" LCD HDTV

I've been trying to find th thermal fuse on a 42we655 for like 3 weeks...It's not under the lamp...Any one know where it is?


Aug 31, 2007 | Sony Grand WEGA KDF-42WE655 42" Rear...

Not finding what you are looking for?
Sony KDS-R50XBR1 50" HDTV Logo

1,011 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76140 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1691 Answers


Level 3 Expert

13434 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides