Samsung HL56A650C1FXZA

[onedayatatime]

I have a Samsung DLP 56" TV (Model Code--HL56A650C1FXZA), that turns on and off by itself.

I've removed the back panel, and vacuumed and compressed aired off everything I could; including lamp removal and reinstall. I set the little blue switch under the lamp cover, as required, during cover replacement. All moving parts (fan wheels) are working. Everything starts up and runs for a couple of seconds, and then the cycles continue. Never stays on for any extented time.

What might cause the sets continuous on/off trouble???

HELP!!! I'm lost here.

Thanks much, in advance!!!

Steven'

[grayfox]

When was the last time you replaced the lamp? even thought Ballasts are the second most consumable part in a Samsung, I find that if it has been over a year since you last replace a lamp, then youre probably in need of a new one! :(

[onedayatatime]

Hey Grayfox!!!

I've never replaced the bulb :cry: . It does light -up when the set starts up, but then goes out, followed by the sound. Then it starts over again, and again. Not sure if that could/would mean that the bulb is bad or not.

Like a lot of folks these days, dollars and cents are few and far between; So I'm hoping and trusting, that it's a simple fix.

Thanks Grayfox!!!

[grayfox]

You are very welcome,

I don't know how long you've had your TV but Wow that is a good life span for a lamp! This can definitely be whats causing this malfunction. Usually my clients need to swap it on a yearly basis, I would recommend trying out a new lamp as this is the most common problem!

[onedayatatime]

November '08....Purchased "Thanksgiving Weekend." Rec'vd first week of December, Grayfox.

If the bulb still comes on (briefly), might that be an indication of a "bad bulb?"

Additionally, I did have a buzz-buzz sound until I "compress aired" what I think, is the ballast. No buzz since then.

[grayfox]

hmmm, depends, if you purchased an original Philips lamp then its probably good, but if it is a generic or an off brand those can last anywhere from 3 to 5 months.

[Macheteman]

Because your post is a month old, I'm assuming you've repaired it by now.

Samsungs in those years (on the LCDs, I'm assuming the DLPs are similar) had a bad batch of capacitors that got built into their power boards.

This is evidenced by opening the rear of the TV and looking for the board with capacitors of both blue/silver and black/silver labeling. the capacitor heads look swelled up instead of their manufactured form which is flat. (Youtube videos are prevalent)

The board is a cheap replacement, usually $50 on ebay, a bad TV will get scrapped for parts.

Happy TV DIY!

[krimi]

I fixed my hls 6187 dlp in three days. A lot of web research and here is what i came up with. If your tv turns on and you get a picture and then it turns off a minute or so later...then it is the temp sensor located above the the bulb assembly(plastic). It is on top of the metal housing that the bulb assembly slides into. On mine there is a blue and white wire that plugs into it. You can jump this by pulling the plug out and pushing a wire or paper clip into both holes of the plug there by joining the blue and white wire and bypassing the temp sensor. Turn it on..enjoy tv! If the bulb turns on it s ok. If the bulb turns on then it got power from the ballast, its ok. If you get a picture then the color wheel is ok??!! I have not seen this answer too much but it seems to solve the "new" heat build up which is..just being wrongly recognized by the sensor!!!

[grayfox]

hello krimi!

That is a great way to instantly get your TV up and running and if that "temperature sensor" (thermostat) is indeed the problem it will work no problem. my only advice is that once you get a chance you change it for you might be shortening the lifespan of your lamp since this sensor can control everything from startup/runtime to fan ignition...!

Hope this helps!