SKR 1.3 Heated Bed Issue

Hi, i have skr 1.3. I decided make a heated bed my printer. Everything is done but something wrong my board. Firstly doesn’t have heated bed settings on my LCD then i change bed termistor code 0 to 1 in configiration.h. I read 120degrees without NTC and if i plug it it change little bit. I measured thermistor connector on board. It has 3 thermistor connector and two of them has 3.3v and my failed connector has 1.6v?. Also i try to measured thermistor resistor on board, my failure connector’s resistor must be 4.7k but resistor is different value on borad(I pull up this and its give 4.7k). So i can’t use heated bed.

What is going wrong and what can i do?

Note: NTC is 100k 3590 and 125k on 20 degrees

Only really 3 possibilities (assuming you set correct pins in firmware)

Damaged R17
Damaged C15
Damaged P0.23

I checked c15 capacitor, it failured and i change it but unfortunately same as before.

Can i fix that or use other thermistor connector?

Edited 1 time(s). Last edit at 12/30/2019 08:59AM by keremdikmen.

Finally i solve this. Firstly thermistor's capacitor is failure and because of i see wrong value on screen. After then i replaced it but i can't properly solder resistor so its give wrong value again. Now both are okey and i see true value. Thanks for help

Quote
keremdikmen
Finally i solve this. Firstly thermistor's capacitor is failure and because of i see wrong value on screen. After then i replaced it but i can't properly solder resistor so its give wrong value again. Now both are okey and i see true value. Thanks for help

Where do you buy replacement for C15 and R17? I am in on the same boat...
Thanks!!

Quote
invernomuto


Where do you buy replacement for C15 and R17? I am in on the same boat...
Thanks!!

I didn't buy, I removed them from old parts(motherboard etc.). But you can find this way. Also If you have you can buy from local electronic shop or internet.

For SKR 1.3 R17=4.7k and C15=10uf

Edited 1 time(s). Last edit at 01/26/2020 07:15PM by keremdikmen.

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