I've also just found the following post that seems to point to a common link between the blower motor and these multiple PCB failures
https://www.talkmorgan.com/ubbthreads.php/topics/612561/all/pcb-fails-for-the-fourth-timeThis comment has also got me thinking:
There are some posts somewhere on here from me on exactly the same issue. In my case it was the fly back diodes being under spec and failing to a short. Which blew that 5a fuse. I have replaced these with standard 4001 diodes and all fine. I popped some pics on here at the time and details of which diodes.
Cheers
Nick
TBH rather than relying on a repair of the burnt track I really need to understand why it failed in the first place, or it'll likely just fail again
In the above post Gambalunga talks of four PCB failures on his 2012 Plus 4 before he went to an old school relay solution, Monty is a 2012 Plus 4 and my failure also arrived at the same time my blower motor went on strike, the similarities are hard to ignore.
At the time of failure I also blew the fuse for my speedo and ignition warning light, however, once the fuse was replaced the speedo and ignition warning light did return. But sadly I was now left with no illumination in the fog light and heated screen switches, although in my case the issue is just switch illumination as both the switched devices themselves remain functional.
This is what I was left with:
* No illumination of the fog light switch - Rear fog light still works
* No illumination of the heated screen switch - Heated screen may not be working?
* No indicator tell tales - Indicators still work
* No headlight tell tale - Headlights and side lights still work
* No high beam tell tale - High beam still works
* No seat belt tell tale - This light never worked in my ownership
Oddly I still have illumination in my hazard warning switch?
Like I say, I’m keen to trace the true source of the fault rather than just have my local electronics engineer repair the burnt track, could there be something in the fan relay flyback diode theory?
