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DLP TV repair question

E

Exterous

Super Moderator
We had moved our Samsung DLP TV out of our family room to paint the ceiling. Now, since moving it back in, it has an annoying habit of turning on for 5-30 minutes and then turning off before turning right back on again. Nothing but the standard front light codes

So far I have:
Checked the power
Changed the power cable
Ensured all fans were running and cleaned them for good measure
Checked all wire connectors to ensure good contact
Jumpered the lamp cover safety switch
Checked for busted capacitors

Anyone have any ideas on what the culprate could be? Its got 4 years on the bulb but the picture seems fine when it does actually stay on. I was kinda thinking the ballast as that seems to my uneducated mind the most likely to suffer from simple movement but from reading others have said it could be the DMD board or power supply as well
 
could be the lamp. power supply to the lamp detects over-amp and shuts down. how many hours on the lamp?
 
NutBucket said:
Wow. 5k on the lamp is impressive! Sorry, not of much help otherwise. Stupid intermittent problems suck.
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Indeed they do

nickbits said:
is the tv actually turning off or is there just no picture? if the latter i'm guessing the bulb is bad.
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The TV actually turns off for about a second then turns back on with the led status lights doing all of the standard blinking for turning off and then turning back on along with the fans and whirring noise that I am assuming is the color wheel
 
Very true -

we noticed our picture got notably brighter when we replaced our lamp at the 3000hr mark on our Sony unit.
 
Look for info on the Samsung DLP class action settlement. You might get a free repair, or free money.
 
I wonder if the old bulb just broke? I assume it's like your normal incandescent bulbs with filaments and such, and I guess it could break during being moved.

Thankfully, my 5.5 year old Samsung's bulb didn't break while I was moving it this past weekend. 😛
 
Repairing 5 year old TV's are no longer worth it. Some parts can go for a couple hundred bucks, and the repair man will also burn a hole in your wallet. IMO, I would personally get some money for it from a Recycler and get a decent LED or Plasma TV. They have gone down so much in price through the years.
 
Just as a FYI how much does a replacement bulb cost for a DLP TV. I considered buying a DLP once but was told the bulbs are really expensive. But I was also told the when you put in a new bulb it's like having a brand new TV. Are these bulbs user replaceable or do you need to hire a pro?
 
donfm said:
Just as a FYI how much does a replacement bulb cost for a DLP TV. I considered buying a DLP once but was told the bulbs are really expensive. But I was also told the when you put in a new bulb it's like having a brand new TV. Are these bulbs user replaceable or do you need to hire a pro?
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The bulbs/lamps are user replaceable and normally run from ~$80-$200 with about a 4000 hr lifespan.
 
In my experience, you'll usually pay about $60-80 for a lamp+housing. The lower end of that spectrum tends to be the third party units, which can be hit or miss. The higher end of that spectrum tends to be the OEM unit. Now, notice that I said "lamp+housing", because it's possible to only buy a lamp and potentially save around $20. However, you'll have to remove the lamp from your current housing and put the new one in. This requires you to be very careful because you need to avoid obvious damage to the bulb and also getting fingerprints on it. Just like when you replace a bulb in a car's headlight, you don't want to get oils from your hands on the bulb.

As for how difficult it is? It's really simple. The hardest part may just be how easy it is to access the back of your TV. On my Samsung, I can do it easily by moving my left front speaker. I can most likely do the same with my Mitsubishi, but turning the unit a bit would make it slightly easier. If you get a lamp+housing, the process is as simple as...

1) Unplug TV
2) Remove lamp door (usually has a screw holding it in)
3) Remove old lamp - I've seen screws or clamps used as retention mechanisms
4) Put in new lamp
5) Attach lamp door

Note that step 5 is usually required for testing, because at least in my experience, TVs check to see if the door is there.
 
Well if you are happy with the picture it's certainly cheaper to replace the DLP lamp than buying a new TV set. The only issue is the electronics are still old and electronics don't get better with age. Sounds like money well spent to me to replace the bulb at least the first time. 🙂
 
donfm said:
Just as a FYI how much does a replacement bulb cost for a DLP TV. I considered buying a DLP once but was told the bulbs are really expensive. But I was also told the when you put in a new bulb it's like having a brand new TV. Are these bulbs user replaceable or do you need to hire a pro?
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very easy. Usually a screw holds the access port door and you just pull module out, put in new one. NASA engineer not required.
 
donfm said:
Well if you are happy with the picture it's certainly cheaper to replace the DLP lamp than buying a new TV set. The only issue is the electronics are still old and electronics don't get better with age. Sounds like money well spent to me to replace the bulb at least the first time. 🙂
Click to expand...

I have some 30 year old electronics working fine. Wonders of solid state 😎
 
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