Question about Flat Panel Televisions

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37" Samsung HDTV flat screen . manufactured March 2007

I purchased this screen new in May 2007. Paid to have professionally hooked up. Has worked well for entire time. Absolutely no problems.

June 2008 I come home from vacation. The remote is having trouble getting the streen to turn on, but it does eventually. I change to new tested batteries so the problem will not be remote. I change to new surge protector bar...to be safe... Works .... iffy.... once it is turned on successfully, no problems but for about 3 or 4 days, the connection is difficult. I will see ONLY the YELLOW led light flickering 3x then 6 seconds of nothing...eventually the screen clicks on.

On day 5, nothing at all. Can't turn on with remote, can't turn on manually on the actual screen and as long as power is connected, there is a 3blinks on of YELLOW led then off for 6 seconds. This will continue non stop until I disconnect the power.

I was told over the phone that the "mother board" had to be replaced.

Then I was told, by another person at same store, that the tube and the control panel had to be replaced.

No one as yet has been out to my house to actually look at the screen.

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  • catwings Jul 08, 2008

    I have a Fry's service agreement. They claim the cost estimate given by the repair for screen and control board are too high...so they will/ will not replace with what they deem to be an equivalent item...although they do not carry the 2007 version any more... The contract says they are responsible for repair. No one has actually seen the screen so can not say what the real cost is...can they. What is difference between repairing/replacing "mother board" whatever that is and replacement of control panel and tube...which sounds way higher. I am trying to figure out what is really wrong with the thing to see if it makes more sense to repair something small rather than dumping something and replacing it with a "comp" which is bound to be of lesser value. See my problem????

  • catwings Jul 08, 2008

    Manager of the store that submitted the bid to Frys for repair service used the term "need to replace tube and control panel" I don't know how repair can come up with two different solutions with same set of details.... over the phone. I am trying to find out if it is possible to actually do a valid diagnosis over the phone on the Samsung flat screen. I got to this site where "Experts" are hanging out....because I am attemting to find someone, anyone who knows about Samsung HDTV 37" flat screen....and how to fix it. I still do not know what is wrong because I appear to be caught between the Fry's service contract and their contracted repair people....still do not know what is wrong. Could this just be an external wiring or hook-up issue? Anyone? Help?

  • catwings Jul 08, 2008

    I do not know what a DLP is. But here is the thing. I was not on site when first entered info so the BRAND is incorrect. I am here now so all is now accurate. The flat screen is a TOSHIBA model #37HL67, serial# AM340002767. I am hoping it is just a "lamp" issue or better yet the dust in the vents that The Machine suggested. With new correct and elaborated info I hope you can help.

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I have the same problem on my Toshiba TV. The model number of my TV is 37HL67S. A technician checked my TV and he found out that there is a problem in the IC STR-Z4517. Now, the problem is, the STR-Z4517 is not available in our country. I'm from the Philippines. Please anyone help me.

Posted on Nov 28, 2009

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It's normal when you turn this unit on for the led to blink yellow 3 times and there to be short delay before the picture comes up.

Posted on Jul 08, 2008

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Is this a DLP tv? If so it could be something as simple as a bad lamp which would be rather inexpensive for Fry's to replace. Also if this is a DLP your problem could be heat related. If the fan is blocked our the air vents are clogged with dust then the TV will not turn on.

Without knowing the exact model of your TV it is hard to say what the 3 blinks of the yellow LED means.

Posted on Jul 08, 2008

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  • Dean Joly
    Dean Joly Jul 09, 2008

    You can use a vacuum, a can of compressed air is also my best friend in these situations, I also use a clean paintbrush to get the stuck on dust. If it's really bad you may have to get inside the TV to clean it.

  • Dean Joly
    Dean Joly Jul 09, 2008

    It's not a DLP it's an LCD so there is no lamp or fans, so dust is probably not your problem. I will research further and get back to you.

  • Dean Joly
    Dean Joly Jul 09, 2008

    Ok 3 blinks of the yellow LED is normal while the TV is powering up. This means that your TV is stuck in a perpetual loop to try to turn itself on. Unfortunately this means that there is most likely a board level problem in the TV. You should try to plug the TV in another room to rule out the outlet it's plugged into but that is unlikely the problem.



    If you want to attempt this yourself you would have to open the TV and get access to the boards. Then you will have to inspect the board for any burnt out parts. Look for bulging or leaking capacitors, they look like little batteries usually. These should be easy enough to replace and would cause your problem if they bulged or leaked. If you do find evidence of damage then it may be easier to try to source out the entire board to replace but I couldn't find a store online with them.



    You best bet is to bring it into a Toshiba authorized service centre for an estimate. Then weigh your options. If it's fairly expensive you may want to consider a new TV as the 37" and even 42 or 47" models have come down in price considerably. Let me suggest the Olevia 747i from Tigerdirect.com, it would be the best $1099 you ever spent.

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I can not tell without the model number what type of flat screen you have. If the servicer is talking about replacing the panel whether it is a plasma panel or LCD, the replacement cost will exceed the original cost. It is unlikely that the panel is bad. I would first suspect a problem with the power supply module. Given that initially the set had to "warm up" before it worked for a while, I'd be looking for bad connections in the power supply. It is possible that there is a logic problem that is preventing the picture from showing. Do you get sound or is the set totally dead? Does the standby light blink then stop? What is the exact model. With the above info, I should be able to give you more details/options.

Dan

Posted on Jul 08, 2008

  • ABRsvcs Jul 08, 2008

    Just re-read the posting and noticed that there is a blink code of 3. Once I get the model, I can look this up and get you details. Please update this with the exact model number.



    Thanks,

    Dan

  • ABRsvcs Jul 09, 2008

    Thank you for posting the make and model. This model has a history of the regulator chips going bad. This is part number 75001933 and is available from tritronicsinc.com for $12.84. If you can solder, try replacing that part first. Inside the unit, this will be a multi-pin IC with the marking; STRZ4517.



    Let me know if that does not resolve the problem. The other alternative is to replace the power board part number 75005783 also available at a cost of $243.11



    Hope this helps,

    Dan

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The diffrence between repairing a motherboard and replaceing it is.

Replaceing the motherboard
-The whole tv is taken apart and the main board is removed and a brand new one is fitted in its place.

Reparing the mainboard
-A experienced tech may spend few hours in reparing the faulty mainboard replaceing components or looking for the problem.
-Ones the repairs are complete the old repaired board is placed back into the tv.

Posted on Jul 08, 2008

  • Ekse Jul 08, 2008

    control panel is the front panel in the television with the buttons,



    Im not sure about the tube lcd television doesn't have a tube, maybe I missunderstood.

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It is going to be one of the two. Call the store several times a day and harass them until they get someone out to look at it. With it only being a year old, I would demand a replacement.

Posted on Jul 08, 2008

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