Todays 'just sort out a new light', Customer says the bathroom light failed, he took it to find a replacement and left the failed unit there for disposal.
It's a circular white plastic enclosure about 200mm diameter (shown green below, the marks on the ceiling indicate the original was much bigger) with a quarter turn removable ring/diffuser, PCB containing; LED's, driver and terminals (shown pink) and removable by 4 screws and 4 fiddfly moulded clips, trapped between the terminals and PCB is a sort of flexible cream plastic piece which folds round the PCB as a barrier between PCB and wiring. The wires come through a hole obscured by the PCB, round the cream piece into the terminals.
No visible terminal markings on the PCB and the instruction sheet indicates only 3 terminals L-E-N.
The foreign gent had noted the original connexions
(interpretation circled) and replicated them and tried swapping some around but the best he managed is the original layout which has the fault of light staying on for ~20 minutes until the fan stops, used to be more like 5 minutes,
Stupidly I didn't take pics as the sketch perfectly matched the connexions in the fitting.
First I marked the reds and disconnected everything in the hope I could lift the cream plastic out of the way, it didn't move. It was crazy tricky releasing the 4 clips to remove the PCB but once out I found the cream plastic piece is the same size and shape as the PCB, including the 4 screw holes, it could then be folded back out of the way to reveal N-E-L-L2 markings with no obvious PCB tracks to L2. From 'On the bench' dead and live tests I believe it is there as a loop terminal and appears to offer no other functionality.
Without knowing what the previous fitting was, I have no idea if this could have been a working solution or indeed whether the sketch actually matched the original wiring, I suspect not but equally I suspect the original was not wired correctly.
No earth wires involved.
It's a circular white plastic enclosure about 200mm diameter (shown green below, the marks on the ceiling indicate the original was much bigger) with a quarter turn removable ring/diffuser, PCB containing; LED's, driver and terminals (shown pink) and removable by 4 screws and 4 fiddfly moulded clips, trapped between the terminals and PCB is a sort of flexible cream plastic piece which folds round the PCB as a barrier between PCB and wiring. The wires come through a hole obscured by the PCB, round the cream piece into the terminals.
No visible terminal markings on the PCB and the instruction sheet indicates only 3 terminals L-E-N.
The foreign gent had noted the original connexions
Stupidly I didn't take pics as the sketch perfectly matched the connexions in the fitting.
First I marked the reds and disconnected everything in the hope I could lift the cream plastic out of the way, it didn't move. It was crazy tricky releasing the 4 clips to remove the PCB but once out I found the cream plastic piece is the same size and shape as the PCB, including the 4 screw holes, it could then be folded back out of the way to reveal N-E-L-L2 markings with no obvious PCB tracks to L2. From 'On the bench' dead and live tests I believe it is there as a loop terminal and appears to offer no other functionality.
No earth wires involved.
