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grayfox

Hello! well the only 2 glass pieces that shatter can be the lamp and colorwheel, if the lamp blew then the ballast could have buzzed because it arched at the 15 kV it generates for ignition.. if the colorwheel blew then you would have heard a screeching grinding sound, the the wheel could have shatt...

grayfox

welcome! :D WAIT WARNING! :!: :roll: the ballast plugs directly into the lamp so finding it is as easy as following the cables from the lamp... ;) BUT this generates a 15 kV ignition charge :o so I strongly recommend you DO NOT take you multimeter to test it! :cry: you can test it for watts after th...

grayfox

I think we are misunderstanding each other :oops: , my comment was to merely point out the differences ;) I only post to help. if your tv has been diagnosed to have a faulty DMD CHIP :!: then you do not need the complete DMD BOARD :shock: that is what I was hinting at sorry if it was misleading. :? ...

grayfox

What is the part number? I think I can find it cheaper, I am 75% sure this is what is malfunctioning...

grayfox

Hello! I would start by changing the power supply board (that which has the actual plug that goes to the wall) if that one survived the charge then the ballast might have received damage (the smaller board that plugs directly to the lamp). But I am almost certain the Power Supply board got fried! :s...

grayfox

Hello again smith, I admire your spirit! :D hmmm to be honest a winding, grinding or screeching, sound as you know should be associated with a spinning object... If this is causing your TV to shut down, this is most probably a colorwheel issue, I have been hearing more and more about this model havi...

grayfox

Hello, Some TVs have an alternating wiring to the fans so yes it is possible for that to happen on some models with an induction/extraction cooling method where both fans need to run simultaneously. This can even be the ballast, you are correct about the colorwheel, it might be fine, the ballast cou...

grayfox

hello hungsolo! lol

Yes was there any update? if there was no physical harm to the buttons, its most probably a DMD (motherboard) issue.

grayfox

hmmm hard part to find

can you get me a part number of the board itself??? or maybe even call the manufacturer and ask them what part number you should order, (they probably wont have it) and I can help you find one online

the cheapest around

grayfox

DMD chip is different drom the DMD board, you need the DMD board...

grayfox

If you are ordering from DM it is correct they refurbish complete components like that I have installed them in the past no problem! most of the times i buy it for the sole DMD and keep the ballast and colorwheel for future applications!

grayfox

Well if the ballast fails, then it does not proceed with its only purpose and TV never turns on (ballast handles lamp ignition) If the colorwheel is bad then the detection of mentioned fail, tell the mother board to abort ignition. Please refer to some very helpful guides located at this forums home...

grayfox

:arrow: The only screeching winding sound I have come to hear in my years as a tech comes from a Colorwheel, this is the third most popular consumable part inside your TV after the ballast and of course the lamp. there are no other components that can cause this noise, also it is a very delicate par...

grayfox

This sounds like just a lamp issue, when was the last time you changed the lamp? It can be very dim, so as to not give you a pic, these lights are brighter than the sun! if it is an old lamp I suggest you change it!

grayfox

HMM go by the pictures DM has great pictures of what you're actually ordering!, as long as the part number led you to the part and the picture looks the same, has the same inputs / some boards have the same PN but different inputs

grayfox

welcome, feel free to post pictures with questions if confused, ill be glad to help

grayfox

As a seasoned tech, I can tell you I am sure you can replace it, it is located obviously on the back shell of the TV and has nothing but screws and plugs, nothing to cut or solder! just make sure you open up the TV and get a part number aside from the TV model number because some parts change! I buy...

grayfox

After you removed the batteries did you check if the -vol button on the set is depressed?

grayfox

Hello! I think a board is heating up too much... since this happens after a while and cooling it down seems to fix it temporarily until it heats up again. :shock: This can be something simple (I would try this first) like the input board. ;) or a DMD board in which case the complete light engine nee...

grayfox

Hello!

I also think as BYO says above that this is more probably a Ballast issue. Given the buzzing sound and the clicking sounds, I have to conclude that the ballast is weak and those symptoms are created when it cannot arc the 15kV needed to ignite the lamp and clicks to a stop...

grayfox

Hello mhenry, I think you might there must have been some damage to the colorwheel prior to installation, OR the power supply is giving the incorrect voltage to the colorwheel... :?: I am leaning more towards the first, because of the screeching sound :x and because ifthe colorwheel does not turn on...

grayfox

try www.discount-merchant.com if you cannot find it on their website i usually call in! maybe they have one...

grayfox

welcome! let me know if you need any help!

grayfox

you may not have to , these HD large screens are a shame to dispose of,

i found some on discount-merchant.com for around 300,

and the installation is fairly easy, nothing to cut or solder

...
as a field tech i used to charge 700 for the unit and 200 for the labor...

grayfox

This can be a DMD board issue, in which case it would require the replacement of the complete light engine

grayfox

I think this is going to be an issue with your DMD board... does it do this with all inputs?!?!

grayfox

I am certain it is relatively easy just time consuming, take a look at the guides in this sites homepage, as long as the TV is unplugged for a couple of hours the capacitors will loose their charge. I would suggest you take a look at the back, most of these do have an access tray to work on them!! :...

grayfox

hhmmm so the Digital HDMI signal if fine??? and the other analog inputs are like this??? This is almost certainly the Digital Video Board, its easy to replace and relatively inexpensive! (discount-merchant.com has them for around $40) The problem lies when DLP technology projects Digital signal, if ...

grayfox

Well I would recommend taking a look at the NESDA website they have a directory of techs that are registered with them, myself included! but it is nothing you cannot do yourself, its just a bunch of screws and plugs nothing to cut or solder!

grayfox

Hello! If you want to trouble shoot price and time wise, I would recommend changing the lamp first, especially if this flickering started more than 6 to 12 months into the lamps lifetime. The only other part I could think of that give you this flickering is the lamp ballast (very common) or your TV ...

grayfox

Hello alohakoa!

What seem to be the symptoms of your set?

grayfox

Welcome, you know were to go if it ever (God forbid) starts acting up

grayfox

here to help!

grayfox

this might be the ballast, but I would try a new lamp first since it is the most common part to go bad, if it was the color wheel you would have gotten some kind of discoloration before it went out...

Hope this helps

grayfox

depends on the model, but if the signal is just relayed through the VCR the TV might be able to display at 1080 without loosing a bit of quality... frankly this is the first time I hear about this "fix it" nice work! 10 for ingenuity

grayfox

hmmm that raises the probability of it being a digital video board...

grayfox

hello bosox,
It can be a problem with the input board... when you changed the inputs the problem went away completely?

grayfox

??? do you know your TV model number...

grayfox

no worries you are very welcome! hmm, so the digital inputs are affected in different ways, I am almost 100% sure this can be a bad Analog/Digital Main input board! (or at least I would try replacing that first since it it relatively inexpensive compared to a DMD). About the tilt, make sure the lamp...

grayfox

I think this can be an issue with you DMD board, does this happen with all inputs?

grayfox

good luck! standing by

grayfox

if it is continuity clicking I lean more towards a ballast issue, anyone else care to chime in???

grayfox

well if you lower the color settings and the black and white picture still gets "blotchy it can be the DMD board, some shots of the screen or a more detailed description of the distortion would help

its hard to diagnose over a forum

grayfox

Hey there's another Jedi in the field to lend a helping hand, welcome young Padwan @BYO 8-) robertmein, yup haven't heard that one in a bit "hoooeee!" :o as my friend always says "FRIENDS BEFORE FOES" < a play on foul words to make them better... :lol: Good luck with the ballast and we are here to h...

grayfox

IT can be either, if the image itself is fine the distortion lies only in the color, you can troubleshoot by lowering the "color" setting down to a black and white, if there are no more distortions when looking at a black and white picture, I am 90% sure this is a colorwheel issue, and while you are...

grayfox

The Admin guy (Angel) looked over our blog! look at my rank!!!

grayfox

ok so no ignition even after the lamp is left outside of the set for a couple of hours... clicking sound no ignition no sound... is the sound coming form the colorwheel? does it kind of screech or grind a bit???

grayfox

:lol: :lol: :lol: :lol: :lol: No surprise there! good luck, keep me posted, ...or better yet, get me a part number off the ballast (it is the small board plugged directly to the lamp, hint ;) follow the wires!) Maybe I can dig one up cheap online! 8-) oh I apologize for the "TV Wizard" headline, I c...

grayfox

Yes!!! :P it is hard to diagnose a TV via forums, but there's a lot of helpful info on this site, I meant you could "Google" the fact that virtually all DLP or LCD projection televisions need their ballast replaced at least once during their lifetime since they generate a lot of power and this fluct...

grayfox

you want to replace one of the front screens? they are layered and the farthest back I think in most cases is glued... be careful since there if a glass piece in the back to reflect the projector...

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