Sylvania 42" LC427SSX Strange HDMI Problem

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Whats weird is that touching the pin which turns off the TV actually fixes the problem, until the TV is turned off manually again.

Well, I'm stumped on this, any other ideas what could be the problem?

[tom66]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

What's the voltage across that brown cap?

[budm]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Try cooling or heating up that area with air duster using upside down/hair dryer yet? Or resolder the cap and the IC?

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Measuring the left terminal of the brown cap I get a reading of 0.322V and measuring the right terminal i get 0.009V. I just tried resoldering but no luck.

[tom66]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Measuring the left terminal of the brown cap I get a reading of 0.322V and measuring the right terminal i get 0.009V. I just tried resoldering but no luck.

That seems very dodgy - can you check across D3101 and C3901?

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Measuring D3101 I get 3.38V and for C3901, the top terminal I get a reading of 12.83V, and bottom reads 0.009V. (Measurements are being taking as the TV is acting up)

[budm]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

So when the TV acts up, the voltage on the C3901 goes from 0.322v to 12.83V? That 4-pin IC looks like one of those reset chip. Can you read any number?
The D3101 reading of 3.38v is that from putting the meter probe across the Diode?

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

I meant when the TV is on, but the hdmi problem is there when there is no sound, i would get these voltages when that problem is present. The 0.322V reading I got from the other cap below the 4-pin IC. I think it says 19W on it. D3101 reads 3.38V by putting black probe on ground and red probe on the sides which gives me 3.38V on both ends.

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Would the reading across the caps be normal? I'm not sure.

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

Any advice about the topic anyone??

And I'm also looking to buy a decent ESR/capacitance meter does anyone have a goo suggestion?

[XtraTN]

Re: Sylvania 42" LC427SSX Strange HDMI Problem

So I was wondering if anyone still had any ideas about the problem im having.