EL Escudo Dos (almost) short circuit on AC from inverter" pins

Components & Accessories LEDs
1

Hi,

I am using this part and for some reason I am measuring 1.8 kohms between the two pins of the “AC from inverter” input socket. Since I also have a brand new one, that doesn’t show that low a resistance between the two pins, I assume I somehow broke the part.

I had it connected in this way:

I soldered two pins into the holes directly next the AC input, and connected the AC input that way. Then I connected a piece of EL wire to the existing socket, going off the side. Could that have damaged the board?

I am not excluding a mistake, i.e. almost short circuit from soldering, but given that I am measuring a constant 1.8 kohm, I think I can exclude that possibility, can I? Also, the board had been working using this exact configuration, only after using it for some time, the problem started occuring, and I noticed it because all channels would flicker constantly, and/or not lighting up at all anymore, regardless of the input provided on the A-H control pins.

Is there any measurement I could take on the board, besides measuring the pins directly, that would allow me to pin down the issue?

2

What are you using for an inverter?

3

Different ones, but they are all operating in about the same spec:

In: 12 VDC

Out: 100 - 120 VAC @ 3 kHz

Note that one of the EL Escudo Dos that I have is apparetnly permanently broken, i.e. I am measuring 1.8 kohm between the “AC from inverter” pins when it is completely disconnected.

4

Sounds like one of the triacs has developed a fault. It’s probably more trouble than it’s worth to try fixing, you might consider just ordering a replacement. :cry:

5

Well yes, but I would like to get behind how I could identify the faulty triac, as it happens I have many of those spare, as well as understand how it could have happened, possbily due to short circuits, power spikes or whatever. I already did order replacements, I have a couple more Escudo Dos lying around now.