Mates bread maker stopped working so I had a look inside and saw this burned resistor.
I’m guessing the heat changed the colors a bit so wondering if anyone has experience in reading cooked resistor values.
I removed it from the PCB and measured it at 403 Ohms.
Thanks for any help.
You measured the resistor at 403 Ohms? That would qualify it as “not failed” then. Resistors pretty much exclusively fail open, or on rare occasions, out-of-tolerance on the high side. After 5 years of doing electronics diagnostics for USAF aircraft, I never say any other type of resistor failures.
Resistors are indicated by the colored bands, loads of resources like this: https://resistorcolorcodecalc.com/
I’m old school. I’d reverse engineer that part of the board, work out what the resistor was doing and then choose a value, much as the original designer did.
From that small section of the board - I’d guess that it is a resistor in the CR voltage dropper, used to power the electronics.
According to this, 1GΩ ±5%
