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Trying to replace chip in Samsung DLP 61A750. I replace chip,

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Trying to replace chip in...
Trying to replace chip in Samsung DLP 61A750. I replace chip, reassemble and TV will not turn on. I have taken it apart and reinstalled 10 times without any change. Working fine before I started. Just white dots on screen.
Submitted: 2 years ago.Category: TV
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Answered in 18 minutes by:
7/12/2015
TV Technician: Anthony_Infotech, Technician replied 2 years ago
Anthony_Infotech
Anthony_Infotech, Technician
Category: TV
Satisfied Customers: 15,384
Experience: 20+ years experience TV expert (field and bench) 9 approved qualifications in TV-ELECTRONICS
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Hello my name is Anthony
Welcome
Thanks for the Question
Can you please tell me the part-number of the chip you fitted and the ORIGINAL chip please?
Anthony
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Customer reply replied 2 years ago
1910-6143W
Customer reply replied 2 years ago
Same part numbers on old chip and new chip
TV Technician: Anthony_Infotech, Technician replied 2 years ago
So they both have the same part number exactly where did you get the chip from please?
Anthony
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Customer reply replied 2 years ago
askjimmy.com
Customer reply replied 2 years ago
I mean shopjimmy.com
TV Technician: Anthony_Infotech, Technician replied 2 years ago
What exactly is the problem?is there any blinking lights on the front of the set?
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Customer reply replied 2 years ago
Yes. When I turn on the set the green led lights up and I get the Samsung chime that the TV is booting. After about 20 seconds all three LED's light up. There is a pause, they blink, and then it reboots, new chime, same cycle. It repeats 3 times and then all 3 LED's stay lit. Shop Jimmy staff tell me I am not seating the Chip correctly and I should reinstall. Round 10 comlplete and I am pretty good with this stuff. No love.
Customer reply replied 2 years ago
Hey Anthony, give me a clue. Why refer me?
TV Technician: Anthony_Infotech, Technician replied 2 years ago
Sorry I just had to go out
OK I think that chip is bad now to prove that what you will need to do is put the old one back in again and get back to square 1 that will prove the chip is bad, I have had another person who bought the same chip and it was bad
Let me know how this test works out
Anthony
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Customer reply replied 2 years ago
o.k., will do.
TV Technician: Anthony_Infotech, Technician replied 2 years ago
Yes let me know
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Customer reply replied 2 years ago
O.K, well. Put in the old chip. Same problem.
So, I guess it is not the chip?
Can I ask if putting the back cover on makes a difference? I know some models require the back panel to be replaced because there is a switch that needs to be depressed. After round 6 on this repair I just stopped putting the back panel on because I could not find a switch anywhere.
Not sure how something new failed while I was installing the replacement chip. How do I figure out what is failing at this point?
TV Technician: Anthony_Infotech, Technician replied 2 years ago
All as that proves then is you have made a mistake and yes put the back of the set on and more importantly if you have the lamp cover off this MUST go on
Let me know
Anthony
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Customer reply replied 2 years ago
This model does not have a "lamp cover" as far as I can tell. The door that exists goes directly to a PCB board. The other side is where all the hookups are for DVI cables, etc.The back panel is in and same result.
Customer reply replied 2 years ago
BTW - this may be helpful to diagnosis. But, once the system reboots three times and goes into a solid 3 blinking LED's I can not turn the set off. Hitting the power button does nothing other than make it start to reboot all over again.
TV Technician: Anthony_Infotech, Technician replied 2 years ago
Sorry yes its an LED type
You must have made a mistake but that mistake is man made so its difficult to know which way to go with it
I am sorry I will have to opt out here
Anthony
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Anthony_Infotech
Anthony_Infotech
Anthony_Infotech, Technician
Category: TV
Satisfied Customers: 15,384
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Experience: 20+ years experience TV expert (field and bench) 9 approved qualifications in TV-ELECTRONICS

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