Summary is we might need your used good Raymarine Radar
RL80 or later, in return for a week aboard sailing/snorkeling in paradise. Or another option.
We have a RL80C and a 4kw scanner that stopped working. Identified the fault to be the opto-coupler sensor (OPB620) so we ordered some, and a few weeks later they arrived. Yesterday I soldered in the new one and did a test, it failed, and it now seems the 5v supply to the opto has failed...Further tests were inconclusive, so I tested the newly fitted opto coupler and it was blown. This is most unusual, so I took another new one (bought 5 of them) and tested it = passed, soldered it in and tested it = FAIL...??
The only thing I did was solder it in, then in a stroke of madness, I measured the voltage on the tip of my soldering iron and got 105V AC !!! So the soldering iron blew the upstream power supply to the opto-coupler (which is used to reset the clock and confirm heading every revolution)
Another option would be to ship a used radar
, or maybe just the PSU board out of the scanner unit. So if you have anything that could help us, please let us know. Its a 4kw analog scanner.