My problem is intermittent on Sharp mod: LC-52D65U. The TV…

Question

My problem is intermittent on Sharp mod: LC-52D65U. The TV will work OK for a
period of time (different), than the screen go black, with sound. When you turn
the TV OFF and ON, it comes back OK again, than after some time the screen goes
black and so on and so on...The unit is not so “young” and I can't get any
information (service manual, trouble shooting, etc.). This is what I observed:
On the inverter board DAC-60T012 Master (see picture), the nine (9) pin
connector has the following voltage, when I HAVE and do NOT HAVE
picture:Picture: Pin Voltage No Picture: Pin Voltage2 3.3V 2 3.3V
5 3.0V 5 0.0V
8 2.84V 8 2.84VPin 5 has an “ERR” designation.The second connector (three pin,
not in the picture) coming from the power supply board has the following stable
voltages in both “Picture” and “No Picture” states: pin 1: 60.7V; pin 2: Ground;
Pin 3: 11.94V, all stable.The unit is not so “young” and It seems, I can't find
any service/trouble shooting manuals/schematics...Any help is appreciated.
Thanks Nick

Technician's Assistant: Can you guesstimate how old your Sharp is? And just to
clarify, what's the exact model?

My problem is intermittent on Sharp mod: LC-52D65U. The TV will work OK for a
period of time (different), than the screen go black, with sound. When you turn
the TV OFF and ON, it comes back OK again, than after some time the screen goes
black and so on and so on...The unit is not so “young” and I can't get any
information (service manual, trouble shooting, etc.). This is what I observed:
On the inverter board DAC-60T012 Master (see picture), the nine (9) pin
connector has the following voltage, when I HAVE and do NOT HAVE
picture:Picture: Pin Voltage No Picture: Pin Voltage2 3.3V 2 3.3V
5 3.0V 5 0.0V
8 2.84V 8 2.84VPin 5 has an “ERR” designation.The second connector (three pin,
not in the picture) coming from the power supply board has the following stable
voltages in both “Picture” and “No Picture” states: pin 1: 60.7V; pin 2: Ground;
Pin 3: 11.94V, all stable.The unit is not so “young” and It seems, I can't find
any service/trouble shooting manuals/schematics...Any help is appreciated.
Thanks Nick

Technician's Assistant: Does the TV menu work? Do you have the same problem on
all sources/inputs?

Read message, please

Technician's Assistant: How long has this been an issue? What happened right
before this popped up?

Few month

Technician's Assistant: Is there anything else important you think the TV
Technician should know?

No, all is in the message

Anthony_Infotech · Accepted Answer

Hello
Welcome
I am sorry you are having trouble here,I am presently reviewing your question be
with you very soon.

Anthony

Yes OK so you understand its likely to be an inverter issue the thing is there
is no repairing these boards to component level and there are reasons for that
if you want me to explain I will, its simply a board changing exercise even at
workshop level do you understand this?the other thing is when the set goes black
do you have any blinking lights on the front of the set?

Anthony

Yes OK so you understand its likely to be an inverter issue the thing is there
is no repairing these boards to component level and there are reasons for that
if you want me to explain I will, its simply a board changing exercise even at
workshop level do you understand this?the other thing is when the set goes black
do you have any blinking lights on the front of the set?

Anthony

If you need more help let me know, otherwise I will opt out here let me know

Anthony_Infotech · Answer

Yes OK so you understand its likely to be an inverter issue the thing is there
is no repairing these boards to component level and there are reasons for that
if you want me to explain I will, its simply a board changing exercise even at
workshop level do you understand this?the other thing is when the set goes black
do you have any blinking lights on the front of the set?

Anthony

Anthony_Infotech · Answer

If you need more help let me know, otherwise I will opt out here let me know

My problem is intermittent on Sharp mod: LC-52D65U. The TV…

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