This particular type-K thermometer served me well over the past 2 decades. Unfortunately some intermittent readings on the Celcius selection started a while back, and now only the Fahrenheit selection side is working. I've contacted Digitron in the UK for a service manual / circuit diagram to assist in fault finding etc. The response was very quick, but (part of original message received):
"
Hello .............,
The Digitron 3228K model was discontinued back in the late 80’s.
I no longer have access to any documentation.
So unfortunately I cannot assist you.
Regards,Technical Support Coordinator
Office: +44 (0) 1803 407828
Digitron
A brand of Elektron Technology
Woodland Road,
Torquay,
Devon, England, TQ2 7AY
www.digitron.com www.elektron-technology.com"
If any of the members reading this and can assist on obtaining same, I will really appreciate. I know its not worth repairing, but I would like to get it back to working order, if possible - just for the sake of sentiment (images attached).

regards
jct