After some armchair research I decided to go for it.
- Removed the screws and gently pried the casing to break the seal.
- Placed the unit in a convection and heated it to 104C/220F for half an hour
- Secured the unit in a vice and gently pried the casing away. Using gloves and a flat screw driver. The choke was adhered to the upper casing and the potting compound broke away and the choke remained intact on the PCB.
- I looked at the fuse and took snapshots. No burn marks or any anomalies observed inside.
- Soldered a 2cm piece of wire over the fuse. I know this is highly NOT recommended. I’m using low voltages.
- Repeated step 4 A FET check outlined above. 6. Pre-RMA test form - MPPT solar charger
The three lights flashed repeatedly and stopped and the blue light remained blinking @5 seconds.
