Question about Televison & Video

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My TV does, No picture, sound OK. I did change the lamp and the ballast all new, but stil the same problem.

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  • gabchivas May 30, 2009

    Hi Spark9,



    Here is what is happening. When I turn the TV on, the power button blinks 5 times, at the same time the color wheel is moving. Then the power button lights goes solid and the color wheel stops. That happens for 10 times. During this time we hear a humming noise that increases and decreases. The fans seem to work OK. After the 10 times of blinking the power light blinks for 1 minute. Then it stays solid again and the power wheel stops. The fans continue to run. From then on the humming stays the same.



    We tried to find out the cost of a color wheel at Parts.com and found out that it has been discontinued. I called RCA and was told that they were only allowed to sell that part to the authorized RCA dealer. But as you know, they are very expensive and we live far from their location.



    Let me know if you still think it is the color wheel with the information I gave you or if you think it might be something else.



    If its the color wheel, where do you think we can get a color wheel?



    Thanks for your time and I hope we can find a solution.



  • gabchivas May 31, 2009

    We looked at the link on where to get the colour wheel from ebay. It looks like our wheel but it is a Samsung and our TV is an RCA. Are they compatible or will it cause damage if we put the wrong one it? We've already replaced the balist and just want to be sure that the colour wheel will work.

  • gabchivas Jun 01, 2009

    Hi Vortash,
    Well, we have been communicating with a few techs to help solve the problem and that is what they tell us it is. Below is the last communication we had with one of the techs.

    Here is what is happening. When I turn the TV on, the power button blinks 5 times, at the same time the color wheel is moving. Then the power button lights goes solid and the color wheel stops. That happens for 10 times. During this time we hear a humming noise that increases and decreases. The fans seem to work OK. After the 10 times of blinking the power light blinks for 1 minute. Then it stays solid again and the power wheel stops. The fans continue to run. From then on the humming stays the same.

    We tried to find out the cost of a color wheel at Parts.com and found out that it has been discontinued. I called RCA and was told that they were only allowed to sell that part to the authorized RCA dealer. But as you know, they are very expensive and we live far from their location.

    Let me know if you still think it is the color wheel with the information I gave you or if you think it might be something else.

    If its the color wheel, where do you think we can get a color wheel?

    At first we thought it was the lamp, so we replace the lamp. Then we called the service number and they recommended an approved RCA service rep. He thought it was the ballast. We ordered a new ballast and replace it but still no picture. We contacted the tech at fixya and explained what was happening and they thought it was the color wheel.

    We contacted RCA to get a color wheel and where told that only a service rep could order that part. We contacted Parts.com and where told that they no longer make that part, that is discontinued.

    We still do not have visual and we are trying to fix the TV. The model number is RCA HDTV M50HW72SYX12 or M50WH72SYX12.

    Anything you can do to help solve this issue is greatly appreciated.






    Maria Valencia

    District Administra

  • gabchivas Jun 02, 2009

    Ok, but the real question is, before we order the color wheel, is that what we think will solve the problem based on all the information we've provided?

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Hey i found a solution in fixya with tv symptoms exactly as urs.....

check out the following ... unfortunately for the user.... changing the color wheel dint help.....
http://www.fixya.com/support/t1506241-new_problem_replaced_color_wheel_lamp

even i think its some internal capacitors that need sto be replaced...... its better to open the tv and check out the capacitors... rather than blindly spending on replacing the color wheels.. as i see u ve already spend some bucks for no use..... if ur not comfortable fixing this urself... please contact a tv repairman nearby

good luck

Posted on Jun 02, 2009

  • SAM JAYANTH CHANDRASEKAR

    hi this is iversh again....





    From your description of the situation it seems
    that the problem is with the power supply. There might be a faulty
    capacitor or bad fuses resulting in burnt off resistors and
    transistors. So the PSU also needs to be checked. 
    If you want to
    repair it yourself then you should be having proper knowledge about the
    internal circuitry of the TV and especially the PSU.


    good luck


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Smart Help Center, 661 310 7838, Valencia, CA.

You can call and ask if they can order the part for you and shipping it to your desired location.

They are pretty friendly and Im sure they can order the part for you.

Posted on Jun 02, 2009

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Hi I am Vortash first I need to know why you think it is the colour wheel ? and secondly do you have a schematic or a manual for this set and what is the model number , all I know so far is that it is an RCA .. I may be able to find out the stock faults for this set or the troubleshooting guide .. you can contact me here on Fixya or if you wish .. the documents that may help you will be on these two sites http://www.safemanuals.com for the instruction manual and http://www.eserviceinfo.com
for the service manual and full shcematic diagrams with easy to follow fault diagrams .. There are quite a few reasons why various televisions don't work after a lamp replacement but to be honest I have never heard of the colour wheel being one of them ( unless the lamp exploded and damaged it ? ) but there is always a first time for everything lol , I would suspect more as you have already changed the ballast circuit a fault on the power supply first and foremost and as the sound is ok a general fault in the return signal to the ballast to say the lamp had'nt sparked as I say a number of reasons .. I gather you are some distance from a repair depot or service engineer so here is my email Vortash@hotmail.co.uk if you have to get any material I can email from here .I will search my data base and if I come up with anything new will add it to the comments on here ... regards Vortash

Posted on May 31, 2009

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Click this link directly to check out lamp time in your tv.if the new lamp which you replaced if its faulty it will indinate lamp time as zero.

http://www.agoraquest.com/viewtopic.php?topic=31733&forum=70
and yes you can get parts at
http://cgi.ebay.co.uk/BP96-00250A-REPLACEMENT-COLOR-WHEEL-FOR-SAMSUNG-TVS_W0QQitemZ370157773103QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item370157773103&_trksid=p3286.c0.m14&_trkparms=72:1683|66:2|65:12|39:1|240:1318&afsrc=1
thanks.

Posted on May 30, 2009

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The color wheel and fans are supposed to come up and run before the lamp/ballast is activated. If the fans are running, look at the color wheel. If you see that the color wheel is not running, that means that it is not the ballast or lamp causing the problem. The color wheel drive voltage can be found at connector CN110 on the DMD board, pin 4. If that signal is present, replace the color wheel. If that signal is not present, but the fans are running, replace the DMD board. If the fans are not running, look on the digital board. It has 3 LEDs. They are, from left to right, 5v standby, Digital 5v switched, Fan 7v switched. If any of them are not lighting up when you try to turn the set on, you probably have a power supply problem. Look at the SMPS solder connections. I have had only one SMPS go bad, and it was not supplying correct voltages on the Digital 5v and Fan 7v lines. You could also have a color wheel or DMD board problem. Either of those can cause no startup.-------------------its the colour wheel problem in your unit.that too needs replacement.this will solve the problem.thanks.please do rate the solution.thank you for using fixya.keep updated.

Posted on May 29, 2009

  • spark9 May 30, 2009

    yes its colour wheel.

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