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grayfox

I apologize there was a spam thread on this topic, I am glad to hear everything worked out! =)

grayfox

Hello again Def, Wow good job, re soldering a new capacitor is no amateur task! consider yourself in the top 10% of "techie handymen" in this country. You would be surprised how many men do not know what a soldering tool/iron is, let alone a capacitor! I hope you BMW bike is running like new, be saf...

grayfox

hi there, no problem glad i can be of assistance. yes in fact that almost the entire module I did not know they sold it like that, I am sure it can also come as just the back input board, with out the bottom.. since we do not know how far the short made it, its probably safer to get this whole BUT i...

grayfox

Hello, Right off the bat it would seem that since you tested both Analog and Digital inputs, the main input board is either malfunctioning or a connecting point/cable is bad. Either way the best way to resolve it I think, would be to replace the main input board.. I hope this helps or others chime i...

grayfox

Hello, thank you for doing some homework before posting! To answer your questions as best I can.. 1. The unit might be experiencing some DMD (motherboard) malfunctions and is stuck on a command, skipping steps 1-3 2. The DMD board, if failing will return a signal to interrupt boot to protect the res...

grayfox

Hi there, Well getting one bad generic lamp is very common but you say you have tried many.. I guess it wouldn't hurt at this point to "test and original lamp" and if not return it... It seems the power supply and all the boards are working are you sure the ballast is the correct one? I would take i...

grayfox

Hello, To first answer your question about the colorwheel, it is a hit or miss. I have dont it before but never on such a large screen. Some Sammys have the exact same part number and I have had some luck.. All I can say is try it? if it fits it might work! Now it seems like you know very well what ...

grayfox

Hello, Wow thanks for the detailed description! Two things on the DMD board, I always hold off and let this be the last thing i replace unless I am getting white dots in the screen display, which would be the DMD chip. The thing that most caught my attention was the whining noise.. it seems to fault...

grayfox

Hi,

Neph has a point, sorry being a tech i forget to trouble shoot with the small steps first. Please ensure you have a correct connection and that when you "wiggle" the cable around the image does not get better/worse..

Thank you Nephilim.

grayfox

Hello, I am glad this worked out nicely, hopefully the plastic composite will hold up much like a glass lens.. So upon inspection of the images, this seems recent I have to ask if you have recently replaced the lamp in this unit? To me and the times I have had to fix projectors with this exact issue...

grayfox

Yay congrats!

And yes if I MUST buy a "recovered" or "rescued" part I make sure I but off an eBay seller with a great reputation, lots of sales, great positive feedback and of course A LOOSE RETURN POLICY hehehe.

Have a good one!

grayfox

Hello, wow ok if more than one lamp doesn't work then you most likely have a ballast issue, now I always refer to this youtube video just to follow the steps. https://www.youtube.com/watch?v=2wwzRWSQqIU since it is not the same model things might look different but the steps are the same I want to g...

grayfox

Hi, I want to say it is a medium difficulty, if you are handy taking stuff apart this will be a good time because everything is bolt, plug and play, nothing to solder. The plugs are unique so you cannot mistake them, you can take everything apart and rebuild it taking the same steps back as you have...

grayfox

Hi Steve, If the lamp is really old it might just show signs of wear, one cannot test these for continuity because they have none.. Now the lamp can be shattered inside the filament.. The balast generates about 5-15kV ignition charge so I would not take a multi meter to it!!! but if you have had the...

grayfox

Hi, I guess with two handy ballasts and one probably "rescued" since when they are working they find no need to refurbish them in my experience.. I would rule out the power supply out put with a multimeter just in case, but that is highly unlikely to be the cause. Now the lamps you have, are those O...

grayfox

Hi, Well that sounds like it worked out ok. At least it was a learning experience when it comes to soldering very tiny parts! I myself use a digital microscope, which is like a webcam with a top mount and light pointed down, its a good investment ;) Let me know how it works out, how convenient for t...

grayfox

Hello, From experience I want to say the colorwheel has become unbalanced. This could be because of many reasons, from over heating if its not properly ventilated, to it just running though its lifespan which is normal. It can work fine but once it reaches a certain temperature it can be loosing or ...

grayfox

hello badsignal yes that would also fall under the category of a malfunctioning colorwheel by what you describe and my experience. the bearing must be bad or the colorwheel of centered if it s whirling or screeching. As long as it is not an electronic buzzing or arching sound, which would mean the b...

grayfox

Hello again,

I hope re installing the lamp took care of the alignment issue!

And yes for a working TV I normally replace it with an OEM Philips lamp which normally lasts at least 18 to 24 months for most of my clients, depending on how spent the ballast is.

grayfox

Hello and wow this post is old, and probably fixed? I just though id respond! So you pretty much rebuilt the TV there should be no reason for this to happen in 4 months unless you: A- have ordered a knock off lamp (not Philips or Osram) which provides sometimes less than 500 hrs of use. or B- maybe ...

grayfox

I am glad I was able to be of help, If you have not yet ordered the HDMI ports, I would recommend (since it is already outside the TV) getting the part number off the board itself and running a search for the entire board online. There are many refurbished/recovered parts, and since this input board...

grayfox

Hi there. There are 2 problems I can identify with your detailed explanation: 1- The HDMI input is malfunctioning and not being "recognized". This can be a number of several things but I will begin with the simplest and most common, after plugging and unplugging an HDMI cable the wear on these is so...

grayfox

Hello, Hey free 60" TV? sign me up! The oddest thing about this malfunction is the random culprits. The first thing to check is the lamp installation, unplug remove and reinstall and fit snugly will fix if its that. The second would be the lamp not shining where its supposed to hehe, on the colorwhe...

grayfox

very very odd.. Please keep us posted, this colorwheel status has me stumped.

grayfox

Please let us know once installed, you can post a question under the brand of your DLP TV.

grayfox

Welcome,

I hope we can help with your problem,
There are a lot of gifted and well experienced techs out here

grayfox

Hello again, Overall I think it all depends on the TVs condition. I install these almost daily and the economic lamps have a high DOA rate but once they are on will last around 600 to 1000 hrs maybe more with proper ventilation. I notice these things when I am replacing the generic bulbs with OEM an...

grayfox

you are correct, could be incorrect voltage, overheating, fan delays, the bearing might take a bit to reach RPMs, etc, etc...

Keep us posted!

grayfox

Sometimes the generic components, like say the ceramic that keeps the burner centered, is poorly calibrated. This could have taken time to set, with the heat and use....

Either way, even if the life span is not as long as an OEM, IT WORKS! YAY!

grayfox

Hello! I ran across this post as unresponded. I have been fixing RPTVs for a while now and I figured as much as you did, but no. I knew there was a reason most TV parts had a CORE charge at the peak of 2008-2010 and not these... I ran into a bunch of reasons, the most popular being that the tinyest ...

grayfox

Hi! I would begin by searching for a LIGHT ENGINE replacement video for a Toshiba, since this is essentially what you would be partaking in, and these need to be reassembled perfectly! As another user put it "like dismantling a bomb" hehe. This is an example of what you are looking for as a guide I ...

grayfox

Hello! I agree with the gentlemen helping you, this is an awesome TV with a great picture I am sure you can find the correct DMD chip part number and order it online. For some of my clients I usually look for a seller on ebay or amazon with a new or working condition and preferably with a loose retu...

grayfox

Hello, I thought Id jump in and help with the colorwheel part number in case you want to order it online

BP96-00674A is the part Samsung lists.

grayfox

This TV might be LCD RPTV, let me check if so one of the LED lens (red, blue and green) might be burned out, this happens with time, and it is more noticeable when a new lamp is installed.

DLP RPTVs have a colorwheel, that is consumable , they sell it and is replaceable.

grayfox

Hello again,

I could not find the service manual for that model Zenith (or other) online..

On the power supply board number, it should be on the board itself (be it yellowish or green) are there many Ref Numbers on it?

grayfox

This must have been the lamp? do you know where you got it?

grayfox

Hi,

I do not think there is a way to test the lamp outside the TV without a proper safe bench workstation and the corresponding ballast. Keep in mind the ignition jolt is 5-20kV!

Taking a multimeter, as proposed, will render a false result because of the arch gap in the uhp chamber..

grayfox

I think its time you take a look at the ballast maybe?

grayfox

If tested and guaranteed I usually buy from eBay when looking to save.. just make sure you read the item condition and return conditions! I've been ordering for almost 10 yrs now online.

grayfox

Hey Mike, No problem. Wow ok that is odd, you are correct 3 defective colorwheels are really bad odds! the inverter board? does your Samsung have and Aux Power Supply board? otherwise I think he meant the Lamp Ballast Board? Please keep us posted of anything new. Like aforementioned, these colorwhee...

grayfox

Hehe they are an acquired taste, the engineering behind the cosmetic is however brilliant.

And yes, about Buell, too bad they are spanning into a more capitalistic business plan and expanding their operations to India and the smaller engine/bike market =( his work on the early Dynas was formidable!

grayfox

Hello! Thank you for the images, I am with you on this one, the original lamp you see there with the reflective UV coating is the OEM Philips lamp (you can get this online from any authorized distributor, ebay or amazon, just make sure it says Philips and its original) The one you purchased is not e...

grayfox

Hello! "disarming an explosive device" <hehehe well done! Normally the only 2 parts in your TV that will cause a noise when malfunctioning would be: 1-Lamp Ballast Board, which emits an electrical arching, buzzing sound when it attempts to ignite a lamp or when it shuts down due to error. 2-Colorwhe...

grayfox

Hello, Thanks for the detailed description, To me it sounds like your colorwheel is in need of replacement, but before you go into opening up your TV when was the last time you replaced the lamp and was it with a Philips original lamp? I am getting a lot of clients come in with counterfeit lamps ins...

grayfox

Hello, I think this is going to be an issue with the DMD board, or Digital video board. The chip on either board is old and when warm enough looses connectivity at the soldering point.. This is why the fan kind of works and keeps it from failing a tad longer... my question to further trouble shoot i...

grayfox

Hi there, Most of the times this is due to a poorly built, cheap knock off lamp, sadly the market is saturated with them... I would first verify its authenticity, it might not be shinning in the correct spot due to a manufacturing imperfection. Mitsubishi uses Osram brand lamps, but everyone in the ...

grayfox

Yes I apologize if there was a typo , I meant DMD board or DMD chip.

Has it arrived and have you installed it?

grayfox

Hello, It seems anyone reading this post was stumped.. I am going to go on a limb and say this might be an issue wit the optical block.. The colorwheel seems fine since during the fault the color is not affected (I am not totally convinced...) The ballast seems to be doing its job at igniting the la...

grayfox

Hello, well any lights? maybe if you have a multimeter check the out pins? But if you are getting no lights at all and not even a "click" when you attempt to power on, then either the PS is bad or it is not installed properly. Also check for trip switches! The TV can have a sensor like on the TV lam...

grayfox

I myself have the bluetooth one, it seems to be louder than the wired kind.. I do like the security of a wired connection, but if you have a chance to try out the Bluetooth ones, you will be amazed. They have a great reach, good sound, and you can take phone calls (use it as a speakerphone!)

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