Hello all,
Someone may know just by looking at the picture, so I'll start with that. The TV turns on, the red LED remains lit (no blinking), but there's only a blob of lit pixels in one corner. The IC (T6VN8XBG-0001) on A board gets really hot after about 5 minutes then it shuts off. Measured 116F with infrared thermometer. I'm thinking panel or A board?
Started by checking for shorts:
P11: Pin 1 to chassis: 8MΩ (Vsus)
P11: Pin 4 to chassis: 15kΩ (P15V)
P35: Pin 1 to chassis: 6MΩ (Vda)
Green LEDs on SC and SS are lit.
P board:
P2: Vsus: 210V
P11: 15V: 15V
P6: 15Vs: 15V
P6: GND: 0
P6: 15Vc: 15V
P6: GND: 0
P6: F15V: 15V
P6: F15V: 15V
P6: GND: 0
P6: GND: 0
P6: F-STBY-ON: 3V
P6: STBY5V: 5V
P6: STBY5V-ON: 20mV
P6: SOS4-PS: 4mV
P6: S0: 0
P6: S1: 3.2V
P6: 1: 3.2V
A board (p/n TNPH0914):
TP3520: 15V
TP3534: 15V
TP3522: 15V
TP3526: 5V
TP5506: 5V
TP9276: 5V
TP9273: 1.2V
TP9201: 3.3V
TP9268: 3.3V
TP5293: 3.3V
TP1110: 4mV
TP4954: 1.6V
TP4953: 1.6V
TP4952: 1.6V
TP4951: 1.6V
SC board (p/n TNPA5399):
TPS0S7: 140mV
TPS0S6: 0V
TP101: 5V
TP98: 5V
TP126: 0V
TP82: 15V
TPSC1: 160mV
UHZ: 5V
TPVAD: 63V
TP57: -117V
TPVSUS: 210V
SU board (p/n TNPA5343):
TPSU15: sometimes 2V and sometimes ~150mV (??)
TPSU16: same as TPSU15
TPSU17: -126V
TPSU18: -131V
SD board (p/n TNPA5344):
TPSD15: 0V
TPSD16: 2V
TPSD17: 1.2V
TPSD18: 0V
TPSD19: 40mV
TPSD20: 55mV
TPSD21: 0V
TPSD22: -131V
TPSD23: -126V
TPSD24: -126V
TPSD27: -5mV
TPSD28: 140mV
TPSD29: 1.9V
SS board (p/n TNPA5400):
TPVe: 135V
VeRef 1: 2.5V
VeRef 2: 2.5V
P5V: 5V
TP057: 0V
TPSOS8: 5mV
TPSS1: 108V
TPVSUS: 210V
P15V: 15V
Panel p/n MC153FU1411A
Thanks for any input!!
Edit: Not sure why pictures are rotated, sorry.
Someone may know just by looking at the picture, so I'll start with that. The TV turns on, the red LED remains lit (no blinking), but there's only a blob of lit pixels in one corner. The IC (T6VN8XBG-0001) on A board gets really hot after about 5 minutes then it shuts off. Measured 116F with infrared thermometer. I'm thinking panel or A board?
Started by checking for shorts:
P11: Pin 1 to chassis: 8MΩ (Vsus)
P11: Pin 4 to chassis: 15kΩ (P15V)
P35: Pin 1 to chassis: 6MΩ (Vda)
Green LEDs on SC and SS are lit.
P board:
P2: Vsus: 210V
P11: 15V: 15V
P6: 15Vs: 15V
P6: GND: 0
P6: 15Vc: 15V
P6: GND: 0
P6: F15V: 15V
P6: F15V: 15V
P6: GND: 0
P6: GND: 0
P6: F-STBY-ON: 3V
P6: STBY5V: 5V
P6: STBY5V-ON: 20mV
P6: SOS4-PS: 4mV
P6: S0: 0
P6: S1: 3.2V
P6: 1: 3.2V
A board (p/n TNPH0914):
TP3520: 15V
TP3534: 15V
TP3522: 15V
TP3526: 5V
TP5506: 5V
TP9276: 5V
TP9273: 1.2V
TP9201: 3.3V
TP9268: 3.3V
TP5293: 3.3V
TP1110: 4mV
TP4954: 1.6V
TP4953: 1.6V
TP4952: 1.6V
TP4951: 1.6V
SC board (p/n TNPA5399):
TPS0S7: 140mV
TPS0S6: 0V
TP101: 5V
TP98: 5V
TP126: 0V
TP82: 15V
TPSC1: 160mV
UHZ: 5V
TPVAD: 63V
TP57: -117V
TPVSUS: 210V
SU board (p/n TNPA5343):
TPSU15: sometimes 2V and sometimes ~150mV (??)
TPSU16: same as TPSU15
TPSU17: -126V
TPSU18: -131V
SD board (p/n TNPA5344):
TPSD15: 0V
TPSD16: 2V
TPSD17: 1.2V
TPSD18: 0V
TPSD19: 40mV
TPSD20: 55mV
TPSD21: 0V
TPSD22: -131V
TPSD23: -126V
TPSD24: -126V
TPSD27: -5mV
TPSD28: 140mV
TPSD29: 1.9V
SS board (p/n TNPA5400):
TPVe: 135V
VeRef 1: 2.5V
VeRef 2: 2.5V
P5V: 5V
TP057: 0V
TPSOS8: 5mV
TPSS1: 108V
TPVSUS: 210V
P15V: 15V
Panel p/n MC153FU1411A
Thanks for any input!!
Edit: Not sure why pictures are rotated, sorry.
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