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hongkongpom
hongkongpom, Cable TV Installer
Category: TV
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Experience:  State Of Hawaii Certified Cable TV installer
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WHY DOES MY TV (72 IN. DLP) TURN ITSELF ON AND OFF AFTER FLICKERING

This answer was rated:

WHY DOES MY TV (72 IN. DLP) TURN ITSELF ON AND OFF AFTER FLICKERING FOR A FEW SECONDS. ALREDY CHANGED LAMP.

Hello and welcome to justanswer.com my name is XXXXX XXXXX I'm here to help you with your TV problem.

 

That does signify a power supply problem but are you able to call the technician back to your home to fix the problem properly?

Customer: replied 6 years ago.
I have tried but can get no response from tech. Also it has been very difficult to find someone in my area who can do an in house repair.

Hello there,

 

Are any of the three front lights (standby, timer, lamp) flashing please?

 

Do you remember a popcorn burning type smell when it started acting up?

 



Edited by hongkongpom on 8/17/2010 at 2:33 AM EST

Here is the power board inside your TV

 

http://tigerdirect.partsearch.com/Part/Samsung/Samsung/HL72A650/Samsung/Samsung/BP4401002A/Recycled.aspx

 

Can you identify it and look on the top for any bulging capacitors which will look like this

 

graphic

 

 

Here is the ballast board which drives the lamp

http://tigerdirect.partsearch.com/Part/Samsung/Samsung/HL72A650/Samsung/Samsung/BP4700029A/New.aspx

 

Also check the capacitor on it.

 

If you see any bulging capacitors and you have TV repair experience you can change the parts yourself. If not then I recommend you change the boards. It's common for both these boards to cause problems so to save you the shipping charge you may want to order both.

 

Since the lamp is new then it should be ok. If it wasn't, then the three LEDs would flash.

 

graphic

 

Once you get the TV working please check to make sure that all the cooling fans are working. If not, you can order from here

http://tigerdirect.partsearch.com/Model/Samsung/Samsung/HL72A650.aspx?p=1&z=50&c=59ec33aeb1ac574c0538010a4576fd1a&bs=Category&bd=Asc&ms=Category&md=Asc&k=&on=

 

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