Samsung un65nu6900f
I've had no luck scrounging a schematic for this unit so time to ask for community help.
I bought this tv used and shortly after it started doing these vertical coloured lines over the entire screen.
Another symptom is the COF tabs are super, super hot to the point of burning skin (dont ask how i know.. lol)
Research has shown this was a common fault but I could not even locate the service bulletin that was mentioned.
I'm hopeful someone has experience with this problem.
voltages are as follows:
VCC : 3.2v
VCOM1 : 5.55v
VCOM2 : 5.67v
VCOM_REF : 5.5v
VGL1_-5V : -7v
VGL2_-10V : -14.9v
VGH1 : 27.9v
VGHD : 0.0v
VDD_16v : 16.7v
VCORE_1.2V : 1.12v
Pannel_13V : 12.75v
The only issue I can see are the VGL 1 and 2 are a little on the high side.
Also the RT6950 chip that generates these voltages must be made for samsung as Richtek will not supply the datasheet so I cant verify any of that circuit.
I hope I covered all the details, anything I missed let me know.
Thanks
Tom.
I've had no luck scrounging a schematic for this unit so time to ask for community help.
I bought this tv used and shortly after it started doing these vertical coloured lines over the entire screen.
Another symptom is the COF tabs are super, super hot to the point of burning skin (dont ask how i know.. lol)
Research has shown this was a common fault but I could not even locate the service bulletin that was mentioned.
I'm hopeful someone has experience with this problem.
voltages are as follows:
VCC : 3.2v
VCOM1 : 5.55v
VCOM2 : 5.67v
VCOM_REF : 5.5v
VGL1_-5V : -7v
VGL2_-10V : -14.9v
VGH1 : 27.9v
VGHD : 0.0v
VDD_16v : 16.7v
VCORE_1.2V : 1.12v
Pannel_13V : 12.75v
The only issue I can see are the VGL 1 and 2 are a little on the high side.
Also the RT6950 chip that generates these voltages must be made for samsung as Richtek will not supply the datasheet so I cant verify any of that circuit.
I hope I covered all the details, anything I missed let me know.
Thanks
Tom.
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