Hi everyone !
I am currently repairing an inspection machine (Rothenberger Modul Pipe 25/16
https://www.rothenberger-russia.ru/f/iblock/f18/roscope_2000_modul_pipe_25_16_komp_schema.pdf)
A crack in the plastic case let some water get inside so the PCB was completely oxydated.
I cleaned up everything but it seems that one resistor was damaged : a big 2512 SMD package between the power input terminal and the main voltage regulator.
I removed it and replaced it by a short-circuit just to test and the device is working fine.
This is a temporary fix, I would like to replace the resistor but it is weirdly marked "751C" on both sides. Never seen that before...
I thought it could be a "7510" but 751 Ohm is not really a common value ... and I don't even know what is the purpose of this resistor right after the input power connector. It does not seems to be a current sense. The Ohmmeter give me 10 Ohm in both direction.
Anybody have an idea about the purpose or the right value of this resistor (or maybe it's not a resistor) ?
(I have attached a picture of the component)
Thanks guys.