ggil44
Senior Member
Last Activity: 03-24-2025, 10:09 AM
Joined: 08-27-2011
Location: Tacoma, Wa
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Good Advice, Thank you all for the help. Regards -
Thank you all for your help. I think lotas is right but I may mess with it just a little to kill time. If I do and have any luck, I will let you know. Thanks againLeave a comment:
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lotas, you are right on.๐ I looked at the other end buffer board and just like you said the damage was there only not as bad. I checked voltages at the T-Con now with both ribbon cables connected and the left damaged section of the buffer board disconnected. As follows, VGA, 1= 15.25v, 7= 8.13v, 8=6.97v, 14= .36v. VSSG= -7.95, TDCOM= 8.57, VGH= 30.2, CFCOM= 6.3, AVDD= 16.1, VSSO= -9.5, VCC= 3.2, V12= 12.4. I am enclosing some other pictures, (first one confirms your scenario). Second is the picture of the screen with both ribbon cables connected to the T-Con but the damaged buffer disconnected....
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Thanks for the advice. I will take a long look at it and decide whether to attempt the repair. I'm retired so I have more time than money๐. What concerns me the most is your comment "Here the board is multi-layered and the current paths inside the board could be damaged..." I have magnifiers so I could probably see to solder but it would be like trying to solder a human hair. As I stated earlier, when I tried to power on the TV with the last (damaged) buffer board disconnected, the TV came on without a picture but had a lot of red vertical lines on the screen so even if I do repair...Leave a comment:
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Hello Lotas, You are absolutely right. Is there any chance it could be repaired? Clean up, eliminate shorts, solder fine wire to bridge broken traces?Leave a comment:
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Ahh, well, I have an update. I decided to check the left buffer strips more closely and so I pulled the left leg support off and discovered the problem. The previous owner, for some unknown reason drilled or did something with the left leg support which completely hid the damage to the far left buffer strip. EasyBone, you may be right RIP. I don't know if the buffer strip is 1 layer of multiple layers. If single layer I might try to rebuild the traces (tedious) but I did disconnect the last ribbon cable to the damaged strip and powered on the TV and got multiple red vertical lines. I am enclosing...
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Thanks for the reply. So you are suggesting masking off contacts on the Left Ribbon cable to try to get a picture? Do you have any idea which ones to start with? RegardsLeave a comment:
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OK, Thanks Lotas. So if I understand you correctly, the T-CON board is faulty supplying the Left Ribbon cable. T-Con boards are "relativity" cheap so it would be better to replace the T-Con board than to try to chase the bad component(s) effecting the Left Ribbon cable power. EazyBone, not quite ready to RIP the M65-E0 but I might wish I had taken your advice later ๐.Leave a comment:
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Hello lotas, When you say "power supply" are you referring to the main power supply or the T-CON board?...
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Had to be gone for awhile, voltages on T-CON with each ribbon cable disconnected R disconnected VGL .04v, VGH .73v VGA 0, 0, 0, 0v. L disconnected VGL -10.51v, VGH 30.2v, VGA1, 15.2v, VGA7, 8.1v, VGA8, 6.9V, VGA14, .35v...
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Hello Lotas, obviously I wasn't getting those voltages on the T-CON board. Does that suggest a main-board problem or power supply? I'm thinking main-board since the TV powers on and the back lights work.Leave a comment:
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Everything seems to be in good physical shape. Yes the red light for optical out plug is lit. Thanks for your help....
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[FONT=Calibri]Vizio M65-E0 T-Con voltages:[/FONT]
[FONT=Calibri]VGA 7 .01v[/FONT]
[FONT=Calibri]VID8 TCON 1.83V[/FONT]
[FONT=Calibri]VID1 TCON 1.08V[/FONT]
[FONT=Calibri]VCC 3.28V[/FONT]
[FONT=Calibri]VGH .78V[/FONT]
[FONT=Calibri]V3D3 3.27V[/FONT]
[FONT=Calibri]TDCON .02V[/FONT]
[FONT=Calibri]VGL .05V[/FONT]
[FONT=Calibri]AVDD .86V[/FONT]
[FONT=Calibri]SCL 3.27V[/FONT]
[FONT=Calibri]WP .1V[/FONT]
[FONT=Calibri]SDA 3.27V[/FONT]
[FONT=Calibri]J106 STARTING PIN 1 .1, 3.27, 3.27, 0, 0, 3.27V[/FONT]
[FONT=Calibri]V12...Leave a comment:
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Hello nomoresonys, I found F101 and checked voltage to be 12.48v on both side of the fuse. ThanksLeave a comment:
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I forgot to add that the IR sensor board had one pin that looked like it got hot. I am enclosing a picture of the back side of the socket as I don't have a good picture of the front. The TV turns off and on with the remote as it should....
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Hello EazyBone, I tried disconnecting one ribbon cable at a time from the T-Con to the buffer boards with no change in the display (no picture) except the backlights were a little dimmer. Don't know where the TCON fuse is but at 12v test point got 12.48V. See pictures, Thanks...
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Vizio M65-E0 No Picture, No Sound
[FONT=Calibri]Hi I inherited a Vizio M65-E0 that isn't working. It must have been dropped on the corner because I found that the infrared circuit had a capacitor with one end broken off of the board and some green corrosion around the plug to the main board. I re-soldered the capacitor and cleaned the corrosion well and tried turning the M65-E0 on and I was successful. My problem is that while the back lights come on and appear to perform local dimming there is no picture or sound. It kind of looks like you are looking at the TV through a very dense fog, where changing the input on the remote... -
Hello dudaindc, The best I could do is get it to work for about 5 minutes but then faded back to power on, self test, power off. I pulled the "D" chip on the controller board for it to work for the short time it did but obviously it wasn't the root problem. I have since written it off because it is above my technical know how and the test equipment I have to repair. Sorry I can't be of more help. RegardsLeave a comment:
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Hello again, I did some more testing with masking off pins and was able to identify the boot loop pin on the right ribbon cable. It turns out that pin 23 is the problem and when taped over, the TV turns on normally. It does however have a degraded picture that looks like burn in. With more testing I discovered that I could uncover all other pins except 19 or 20. With 23 still covered, if I cover 19 I will get very little color fade but I get fine lines and the appearance of burn in on the right side of the tv. If I cover 20 the color fades somewhat but not as much as when I covered all 13 - 24...
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Hi xfox, glad to see you found a work a round. I too have had no luck with changing R13246 values. The only "fix" I had was to tape pins 13 to 24 on the Right (shorter) ribbon cable which results in a color fade from Left to Right on the TV screen. Could you show a picture of what is under the blue masking tape by the ribbon cable and identify what pins or points you soldered the wires from the 2 second delay circuit from the 5V power source? Did this give you a normally working TV with no color fade? Thank you.
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