Sony 42w653a

[LEEDASH]

Sony 42w653a I have is blinking three times then a another three times,been told may be the drivers is this correct or a power board fault ? All I know is the tv will not switch on

[LEEDASH]

Re: Sony 42w653a

[LEEDASH]

Re: Sony 42w653a

Can someone help me test this please,

[dick_barton]

Re: Sony 42w653a

What voltages do you have or not have on the power supply?
Focused photo of the power supply?

[LEEDASH]

Re: Sony 42w653a

[LEEDASH]

Re: Sony 42w653a

[LEEDASH]

Re: Sony 42w653a

Do measure the voltage on the 10 pin connector ?

[dick_barton]

Re: Sony 42w653a

So it uses an external power supply to power the internal combined mainboard/power supply.
There appear to be a number of fuses marked on the board. Have you located and checked each one.
Have you checked the incoming voltage from the external power supply is 19.5V when connected to the tv.

[LEEDASH]

Re: Sony 42w653a

It uses a power supply similar to a laptop,I have not checked as wanted some advice how do do this,I'm armed with a multimeter,I know you ground the black and test with the red,set to dc volts ? So little bit of help I am a quick learner...

[dick_barton]

Re: Sony 42w653a

I'm armed with a multimeter,I know you ground the black and test with the red,set to dc volts

That's correct.

To test the fuses, set switched off and meter set to ohms, place your red and black probe on each side of the fuse and it should measure 0 ohms or close enough for a good fuse.

[LEEDASH]

Re: Sony 42w653a

Thank you for the advice,when testing the input voltage,can the set be on (currently only flashing when on) be best to start to see if right voltage is coming through

[tom66]

Re: Sony 42w653a

Voltage, yes the set needs to be plugged in, else you'd measure zero.

Ohms, no. Some cheap meters can be damaged by measuring ohms when voltage is applied. Most are okay, just not the very cheapest. In any instance, it will not give you an accurate reading.

[LEEDASH]

Re: Sony 42w653a

Just measured the power input only on two pins measuring 19.2 of 19.5 power supply,can I have more asssitance please

[LEEDASH]

Re: Sony 42w653a

[LEEDASH]

Re: Sony 42w653a

Tested c1004 fuse nothing,on the board 4.ld standby does that equal to this fuse maybe ?