Sharp Aquas LC-20B2UA random shut off issues.

[fastvideo]

Re: Sharp Aquas LC-20B2UA random shut off issues.

There is no switch on the socket. See picture 5.
Pin 1, 13V/2.6A. Pin 2,3, 13V/1.5A.
Pin 5, 6, 7, GND.

The voltage and waveform from the fuse test point is good and always presents. Still sometimes it'll turn off. Or sometimes it stutter.

[thisguy]

Re: Sharp Aquas LC-20B2UA random shut off issues.

Thanks for the input guys.

The solder joints appear to be fine visually.

When you guys talk about a switch, do you mean an electrical switch or a switch to release the plug from the socket? I don't believe there is any kind of electrical switch. At least, I don't see any solder joints corresponding to one. There are 10 solder joints for the 10 pins.

Here are some pictures of the solder joints and a different angle view of the socket.

Also thanks for the ebay link crtfool, it may be an option.

Thanks again everyone!

[Village Electronics]

Re: Sharp Aquas LC-20B2UA random shut off issues.

Thanks for the input guys.

The solder joints appear to be fine visually.

When you guys talk about a switch, do you mean an electrical switch or a switch to release the plug from the socket? I don't believe there is any kind of electrical switch. At least, I don't see any solder joints corresponding to one. There are 10 solder joints for the 10 pins.

Here are some pictures of the solder joints and a different angle view of the socket.

Also thanks for the ebay link crtfool, it may be an option.

Thanks again everyone!

Reflow the connections. The grounds look ringed.

[thisguy]

Re: Sharp Aquas LC-20B2UA random shut off issues.

The trouble is that I don't have any reflow equipment. : (

Considering that the these symptoms occurred after a possible short/over-voltage when ice cream melted on the AC adapter, could such a condition exacerbate a bad joint, causing the potential problem?

[Th3_uN1Qu3]

Re: Sharp Aquas LC-20B2UA random shut off issues.

Um, you don't have a soldering iron? What are you doing here then?

[Village Electronics]

Re: Sharp Aquas LC-20B2UA random shut off issues.

The trouble is that I don't have any reflow equipment. : (

Considering that the these symptoms occurred after a possible short/over-voltage when ice cream melted on the AC adapter, could such a condition exacerbate a bad joint, causing the potential problem?

It's a soldering iron and solder melted over the connections. They are bad connections. One problem had nothing to do with the other except in the sense that the plug was over worked in an attempt to make the TV work subsequent to the ice cream induced failure.

Resolder might not fix the problem but it won't hurt it either and it needs to be done.

[thisguy]

Re: Sharp Aquas LC-20B2UA random shut off issues.

Oh sorry, when people usually talk about reflow I assume they mean with a reflow station of some sort (hot air or UV or an oven), because that's how I usually seen the word used. I do have a soldering station. I'll give it a shot. Thanks.

[uncle_rubio78]

Re: Sharp Aquas LC-20B2UA random shut off issues.

HI I have a LC-60LE660U sharp 60 in LED that keeps turning on and off but turns on right away on its own, also after a 3 min of tv on, can not change channel or adjust volume, like no signal from control, I tried to use hard keys and nothing, I have to unplug it from connector but it turns on right away on its own, Any ideas?