Posts made by ademceven

while trying to clean the hot end i might accidentally shorted the thermistor wires, after trying to celan it i restarted the printer but it stucked on startup logo, removed the sd card, restarted no luck, downloaded the latest fw installed it no luck, tried some other softwares and screen gives hot end temperature too high warning and beeps continuously, so i assumed thermistor line has some problem,
opened the main board and checked the thermistor lines both for hot end and hot plate, they have same 130 kilo ohm resistance which is normal, after that i checked the mainboard side for thermistors, it seems hot plate socket has 5 kilo ohm but hot end socket only has 1,6 ohm which is pretty much like short circuit and thats why it gives hot end temperature is too high warning with other softwares, i also checked the voltages hot plate socket has 3,5 volts but hot end socket only has 3 mili volts which tells us that hot end thermistor line has some defect, i hope its just some resistors fried on the line i will further inspect the board if could find the blown resistors on the line,

meanwhile if any of you people has the same printer and willing to help, could you please check the line resistances for the hot plate and hot end sockets for me? (also the voltages?) it would be a big help if you do.

@datsmir hey there it seems we got the same problem, my problem started like this: filament doesnt stick to the plate, ended up being colelcted around hot end (slicone sock was not there because it was ripped) and thermistor, while trying to clean, maybe i accidentally shorted the thermistor wirings momentarily which posibly fired the line, anyway after i tried to restart it stucks on creality logo screen, but no warning, downloaded a different firmware from creality web, installed it and printer gave hot end is too hot warning, and locks the screen also, after that i reinstalled the original software and screen stucks on creality logo and doesnt boot. so i opened the main board and checked the resistance values for both hot end thermistor and the hot plate thermistor, both of them around 130k ohm which is norma, then i checked the sockets, it seems hot plate socket has 5000 ohm but hot end socket only has 1,3 ohm which is almost short circuit value, after that i checked the voltages, hot plate thermistor socket has 3,5 volt while hot end thermistor socket onlt has 3 mili volt. so the problem is probably thermistor line is fried when i accidentally shorted it. i will try to dig in if i can to find if some melted resistor on the line.