Pendolino woes

[bwj]

Again thanks for the help

The DCC chip is definitely the culprit after testing with another working DCC chip (from the class 58 that I managed to botch soldering on while trying to replace the motor - if anyone wants a bodyshell and bogies let me know!)

I don't want to fry another chip. In the attached image when I was gently pressing the loco to the track I got a low voltage shock from the metal block in "circle 3". Wonder if there is some frayed wiring that has shorted the chip, but i thought there were some built in protections against shorts with expensive chips like ESU Loko?

The chip clips just underneath the soundboard (? the large black board marked N20-PCB Rear) but there definitely is a hard soldered wire, not quite the one advised by Revolution. The brown wire runs from the main board of the chip (hard soldered) to the speaker (hard soldered).

I could probably hold my hands steady enough (with a couple of Glenmorangies) to solder that but am I a barking up the wrong tree/what replacement chip is now compatible given the age of the loco /should I just give up and send for repair - if so are Rapido the only reccomended option?

Again thanks to all for the patient replies and suggestions

[ntpntpntp]

Is this a stray wire strand or loose wire?

[bwj]

Is this a stray wire strand or loose wire?

Thanks for the input - I'm not sure the fault lies there. There are three red wired soldered connections to that PCB including the one in your blow up picture. I checked the working front driving car and it has the same set-up and the loco worked with a new DCC chip!