Solar panel low voltage

[GHA]

I have 2 kychero 50w solar panels, just put a meter across them in the cockpit and there's about 13.4v coming out of one and 10.4v the other open circuit (very grey day today), cleaned them both, disconnected diodes and swapped positions but readings the same. Are they take apartable? Might be just a dry solder joint between the panels inside.

Any ideas?

TIA

 

[sailorman]

I have 3.6Kw array on my south facing roof , they have produced only 1Kw today

 

[wizard]

I would wait for a sunny day to make a comparison before going ahead with any amendments.

 

[GHA]

I would wait for a sunny day to make a comparison before going ahead with any amendments.

Might have to wait a while for a sunny day
But looks like something's amiss. Both putting out different voltages under identical conditions. The high voltage panel is measuring 7.4Kohm or 5.4Kohm depending which way round the probes are, the low voltage one is about 750.Ohms either way.

Time for a dig, can't be that hard.......

 

[GHA]

After a bit of a clean up, the on putting out the highest voltage is showing open circuit across the output, the other one about 700ohms.
I think it might be history.

 

[sarabande]

If it's a genuine Kyocera panel, I thought there was a 25 yr warranty ?

 

[charles_reed]

If it's a genuine Kyocera panel, I thought there was a 25 yr warranty ?

Probably not, if you've fiddled with it.

 

[GHA]

If it's a genuine Kyocera panel, I thought there was a 25 yr warranty ?

Looks like limited warranty up to 25 years if you can prove you got it from them or a recognised supplier. These are 9 years old and no idea where I got them