Hello, I have a maxent mx50x3 when i turn it on there is a steady green light for power and the left and right boards also have stesdy green lights, I here all relays click and the screen primes,I think cause it lights up slightly but evenly..I hear a buzzing coming from the board on the left as you look at the inside from the rear and after a few minuets you can see flashing rainbow lines horizontaly across the screen...but no menu will pop up and no picture ..please help
Televison & Video - Maxent - MX-50X3 50 in. HD-Ready Plasma Television
I am sorry to hear regarding the same. Unfortunately, this is an internal problem and TV needs to be repaired. It is highly suggestive of power supply board, however as you could see colored lines, it could indicate a faulty Y sustain board or buffer boards or combination of these. If you have electronics repair experience and wanted to repair it yourself,revert and i would be able to tell where you could buy the service manual and add few pointers to it. If you do not have any experience, you need to send the unit for service or call a tech on site.
I was trying to search for manual,however vendor does not seems to have that in stock. So, i would provide a seller later on, once you check the basic details.
Would like for you to take your meter and place it on DC voltage the positive end on every connector that says a voltage and the negative wire to the panel this is the best ground. Turn on and see if the voltage is present at the VS, VA, V-scan, According to the Label. Also if a voltage is missing remove each board from the power supply to make sure they are not holding down the voltage If you don't find one that's trying to climb, or shows close to what it should be, another method is to locate a short circuit place meter on ohms or beep test follow same procedure no voltage should be shorted to ground. And this is the problem. You can unplug each board one at a time, Starting with the Y-SUS then the Z-SUS.
Friend this is a very common problem with plasma. Within the power supply the capacitors
Start to fail and the way you can tell is to check them visually for swelling or expanding of the top.
It will be easy to see the bad caps will not be as flat on the top as the good ones
Normally the parts for this unit is a kit Y-SUSTAIN AND Z-SUSTAIN BOARD, this is what most manufacturers would want you to do, purchase them. But go to high lighted words and go through all the voltage checks to find the bad part, here is also a chart that should help a lot, also this is a picture that will help with identity.
Answers & Comments
Hi,
I am sorry to hear regarding the same. Unfortunately, this is an internal problem and TV needs to be repaired. It is highly suggestive of power supply board, however as you could see colored lines, it could indicate a faulty Y sustain board or buffer boards or combination of these. If you have electronics repair experience and wanted to repair it yourself,revert and i would be able to tell where you could buy the service manual and add few pointers to it. If you do not have any experience, you need to send the unit for service or call a tech on site.
Let me know,so that we could proceed.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
Thanks for your response!!
I was trying to search for manual,however vendor does not seems to have that in stock. So, i would provide a seller later on, once you check the basic details.
Would like for you to take your meter and place it on DC voltage the positive end on every connector that says a voltage and the negative wire to the panel this is the best ground. Turn on and see if the voltage is present at the VS, VA, V-scan, According to the Label. Also if a voltage is missing remove each board from the power supply to make sure they are not holding down the voltage If you don't find one that's trying to climb, or shows close to what it should be, another method is to locate a short circuit place meter on ohms or beep test follow same procedure no voltage should be shorted to ground. And this is the problem. You can unplug each board one at a time, Starting with the Y-SUS then the Z-SUS.
Friend this is a very common problem with plasma. Within the power supply the capacitors
Start to fail and the way you can tell is to check them visually for swelling or expanding of the top.
It will be easy to see the bad caps will not be as flat on the top as the good ones
Normally the parts for this unit is a kit Y-SUSTAIN AND Z-SUSTAIN BOARD, this is what most manufacturers would want you to do, purchase them. But go to high lighted words and go through all the voltage checks to find the bad part, here is also a chart that should help a lot, also this is a picture that will help with identity.