This looks a lot like a panel I saw mounted to an RV roof. At the time I figured it was heat damage from being mounted flat on the roof with a large bead of caulk around the frame to roof. It was a long time ago and I recall that the panel put out voltage but no useful current. May or may not be the same thing but I definitely remember that light center on the cells.

Maybe someone with more experience has better information. Seems worth looking into whether or not they could be useful.

Cheers.

TomW

It may work sporadically. Semi common for the worst burnt PV's I've seen. Keep an eye on it's charging amps, watching for on, off, on, off kind of thing. They seem to cut out more often when they are hot.

The white film on the back is not a big deal on most panels.
Trim it off with a razor blade. Carefully.  Don't cut into the PV.
Get close to the box, and a bit under if possible.  Run a good bead of silicone around the box so it's touching the PV, just to hold the box still.
If the box is very loose now, get the film out from under it, put a good layer of silicone under it too.

Before the silicone sets up, check the factory silicone inside the box, where the wires come in. Make sure its' laying like it should.  It can get folded so the box won't lie flat, like a poorly installed grommet (best example I can think of).  A bit of wiggling should get it to jump back where it was so the box can lie flat and tight to the PV.

I am awaiting time to operate on that one recalcitent. I learned shortly after I purchased those that they came from a mine site in the north West of Western Australia, so it is reasonable to assume heat has shortened their life. Day temps frequently exceed 40-45 deg C there.

The bad panel makes full volts just gives 0.7-0.9 amps instead of 3.2A, my plan is to bypass that cell as the connection to the next is visably stressed.

I took the panel to the dumpster today.
It died a couple of weeks ago. It was putting out 6.3V unloaded in direct sunlight...