Solara semi flexible, how to test?

[Williamp]

Hi, I've one of these panels fitted to my boat that seems to have failed. I took the panel back to the dealer who said it was fine as he had tested it. His test was to measure the voltage across the terminals which was around 19.5 volts from memory, he then connected an ammeter across the terminals with no load and it produced around 3 amps. I was very concerned about the test for amps. Having refitted the panel to my boat it behaves as it did in the dealers but will not actually put any amps out into a load. Is the dealers test valid?
Thanks William

[Bluemansailor]

Where did you measure it on your boat?
could it be the wiring from the panel to your regulatory?

[Williamp]

I measured the current with an ammeter between the positive output cable and the regulator. I also measured it taking the regulator out of the circuit. Batteries were 25 % discharged with a 10amp load measured using the boats link 10. All other charging sources were disabled.

[djmarchand]

The dealer was measuring the open circuit voltage- Voc and the short circuit current- Isc. Both are reasonable values for about a 50 watt panel.

David