Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

Thanks

Dan

Dan K wrote:

Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

Thanks

Dan

Interesting idea. I imagine cling film would distorrt where it got hot
and thus work.

NT

"Dan K" wrote in message
news
Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

There used to be wax crayons for various temperatures.

Dan K wrote:
Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

Thanks

Dan

does the paper roll used in thermal printers or fax machine will work??

Homer J Simpson wrote:

"Dan K" wrote in message
news

Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

There used to be wax crayons for various temperatures.

You can still get them, but they cost about $15 each.

What about those IR thermometers? Some have a pretty small field
of view and should work. If you can get close to the work, Harbor
Freight has a $10 one (on sale) with a wide field of view (sees
1" when you're 1" away).

Dan K wrote:
Anybody out there know about this? You place the film/paper on top of a
circuit board that has a short circuit and it will show you the hot spots.
I only saw it used a couple times, and that was quite a few years ago.

Thanks

Dan


Stick board in Deep-freezer for a few minutes, so that it becomes cold
enough to frost over in a humid room, and then power up the board. The
high current areas will defrost first ! I am assuming that this is a
low impedance power board, and not bothered by leakage from the damp
circuit-board. the hard-frosted board will not leak until the frost
melts. By then you should have the information you need anyway.

Yukio YANO