My dryer recently stopped powering on at all. I followed the procedure in the tech sheet to narrow the problem down to either the control board or touch panel. I completely disassembled the top portion of the dryer and attempted to meter the touchpad, always getting no continuity for any of the checks. I ordered a new touchpad, and just started trying to meter it with the same result, so obviously I’m metering it wrong. Can the touchpad be properly metered when disassembled from the dryer? Am I missing something? I’ve tried all sorts of things: breadboard leads, reversing the polarity, and can’t get the meter to budge.
[COLOR=“Blue”]Can the touchpad be properly metered when disassembled from the dryer?[/COLOR]
Yes you should be able to do it.
[COLOR=“Blue”]Am I missing something?[/COLOR]
Probably.
Before starting did you short the meter leads together to be sure that it is working and see if there is any zero offset?
Use a higher meter scale.
Are you sure you have the meter set to resistance?
[COLOR=“Blue”]I’ve tried all sorts of things: breadboard leads, reversing the polarity[/COLOR]
Polarity is important because the keyboard has diodes on it so you must forward bias the diodes before you will see a meter change. A key will always read open unless the meter leads/polarity is correct. On most meteras black is negative and red is positive when using resistance/ohms.
Thanks for the info. All your suggestions are good, and I did all of that. I tried an auto ranging meter, and a manual ranging meter at 20K ohms. I tried the polarity different ways on a couple of connections. The only thing I can figure is that table in the tech sheet is wrong, really strange.
Anyway, I just reassembled everything with the old touchpad and my dryer magically started working perfectly. Must have been a loose connection that I fixed in the process.