trencherfield
Plastic
- Joined
- Oct 17, 2020
Hi everyone,
Been stuck for probably eleven months or more trying to fix this particular machine. We've had it for decades. One day last year it stopped and froze (so I was told) then turned off then on again and screen remains blank. Screen is on though, you can see it fire up/off okay.
Best to say what I have tried so far;
1) Checked batt - ok 3v no alarm for that.
2) Checked the QX084 power supply - green led on, so checked all voltages : 5v=4.98v, 12v=12.1v, -12v=-12.14v, 24v=24.15v observed steady figures, no fluctuation - within Meldas specs on pdf.
3) Replaced QX141 with ebay item - no change.
4) Replaced Qx722 daughterboard - no change.
Current leds;
Power supply green as stated.
Qx141 both green.
Qx722 one green one red.
Tried booting with other 2 cards pulled, no change.
Hydraulics not starting up and only 000 000 on control leds lights up.
Checked volts at the two big contactors - one on left has 3 phase ok at top but not coming out, one next to it is also 0v top & bottom of it.
So, after doing all that, just stumped. I refitted the original Qx141 tonight with the new ebay Qx722 as an alternate combo - same outcome, qx141 leds are green so assume that's okay. Just one red on the 722 and one green. Solid not flashing.
Seems as though a relay is not latching somewhere .... I have no idea now.
Any pointers... I have some pictures I took tonight I can probably upload tomorrow.
Oh the 3 big cream coloured boxes on the right (spindle drive? + power supply etc) have a little square led display that says 'A4' on two of them and '6' or maybe 'b' on the power supply one. Is that normal?
Regards,
Neil.
edit: Forgot to add also checked the 4 smps seperate, two 5vdc units both 5.1vdc, two 24v units both 24vdc bang on. I've run out of things to poke my meter on ha ha
Been stuck for probably eleven months or more trying to fix this particular machine. We've had it for decades. One day last year it stopped and froze (so I was told) then turned off then on again and screen remains blank. Screen is on though, you can see it fire up/off okay.
Best to say what I have tried so far;
1) Checked batt - ok 3v no alarm for that.
2) Checked the QX084 power supply - green led on, so checked all voltages : 5v=4.98v, 12v=12.1v, -12v=-12.14v, 24v=24.15v observed steady figures, no fluctuation - within Meldas specs on pdf.
3) Replaced QX141 with ebay item - no change.
4) Replaced Qx722 daughterboard - no change.
Current leds;
Power supply green as stated.
Qx141 both green.
Qx722 one green one red.
Tried booting with other 2 cards pulled, no change.
Hydraulics not starting up and only 000 000 on control leds lights up.
Checked volts at the two big contactors - one on left has 3 phase ok at top but not coming out, one next to it is also 0v top & bottom of it.
So, after doing all that, just stumped. I refitted the original Qx141 tonight with the new ebay Qx722 as an alternate combo - same outcome, qx141 leds are green so assume that's okay. Just one red on the 722 and one green. Solid not flashing.
Seems as though a relay is not latching somewhere .... I have no idea now.
Any pointers... I have some pictures I took tonight I can probably upload tomorrow.
Oh the 3 big cream coloured boxes on the right (spindle drive? + power supply etc) have a little square led display that says 'A4' on two of them and '6' or maybe 'b' on the power supply one. Is that normal?
Regards,
Neil.
edit: Forgot to add also checked the 4 smps seperate, two 5vdc units both 5.1vdc, two 24v units both 24vdc bang on. I've run out of things to poke my meter on ha ha
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