Heater on 1LC stopped working - No VIN

MartinNYHC

Hi All,

my Hotend heater suddenly stopped working and I found out that there is no longer power on OUT0 on a 1LC v1.1 tool board. The 1LC (3.4-b7+1 since I'm using a PT1000) is connected to a Duet 3 6HC (RRF 3.4-b7).

Any ideas please?

MartinNYHC

; Hotend heater
M308 S1 P"121.temp1" Y"pt1000"
M950 H1 C"121.out0" T1
M307 H1 B0 S0.8       		                             ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S300                                             ; Set temperature limit for heater

; Tools
M563 P0 S"Hotend" D0 H1 F0                               ; define tool 0
G10 P0 X0 Y0 Z-2.15                                       ; set tool 0 axis offsets
G10 P0 R0 S0                                             ; set initial tool 0 active and standby temperatures to 0C

dc42

@martinnyhc I assume that the 1LC board is working otherwise, so you know that it has VIN power.

When you say "No VIN", do you mean that you are not getting +VIN on the VIN side of the OUT0 connector? If so, then there is a direct trace on the underside of the PCB between the VIN connector and the OUT0 connector; so check the soldering of the OUT0 terminal block.

If the VIN pin of the OUT0 terminal block is at +VIN but the OUT0_NEG is not getting switched to ground, then that is different, and there are a few possibilities.

MartinNYHC

@dc42 that means that suddenly there is no power at all on OUT0.

MartinNYHC

FYI: just installed RRF 3.4.0beta7+4 and the heater is working again