M
судя по всему одна и та-же причина на обеих платах
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2019 June 14
M
в источнике фоток есть инфа о причине?
SK
@BurlakovSG , https://3d-spring.ru.aliexpress.com/store/group/Heat-Break-Throat/1032650_504027671.html?spm=a2g0v.12010612.0.0.46c133e6Qls4SR
С этого магаза много заказывал, всё вроде норм.
С этого магаза много заказывал, всё вроде норм.
d
в источнике фоток есть инфа о причине?
POOF and magic smoke. Happened when the nozzle touched one of the Swiss clips holding the glass bed to the aluminum bed base. Measuring with a multimeter, I found out that the nozzle is GND and the aluminum bed bottom has very low resistance to the bed heater wires, meaning the touchdown caused a short circuit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
d
да таже плата, просто почистили потом
AB
ну у него похоже КЗ было
AB
на корпус)
d
так, на али купоны раздают
M
да таже плата, просто почистили потом
нет, посмотри фото прогаров, они разные, на первом фото одна форма и место прогара, на втором фото прогар прям до конца чипа
M
POOF and magic smoke. Happened when the nozzle touched one of the Swiss clips holding the glass bed to the aluminum bed base. Measuring with a multimeter, I found out that the nozzle is GND and the aluminum bed bottom has very low resistance to the bed heater wires, meaning the touchdown caused a short circuit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
в любом случае факап )))
AB
эт выход мосфета кровати коротнул на маме гдето
не верю =) как мосфет может запалить контроллер?
M
не верю =) как мосфет может запалить контроллер?
легко, развязки нет никакой
AB
POOF and magic smoke. Happened when the nozzle touched one of the Swiss clips holding the glass bed to the aluminum bed base. Measuring with a multimeter, I found out that the nozzle is GND and the aluminum bed bottom has very low resistance to the bed heater wires, meaning the touchdown caused a short circuit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
я не знаю чо там у чела с проводкой, но вот прям щас замерил на своем эндере и между столом и соплом - 0вольт
AB
скорее всегоу него накопившийся пробой
AB
легко, развязки нет никакой
ну вот пробило мосфет. затвор при это никуда не включен полуцчается, то есть на контроллер не должно прйти
AB
POOF and magic smoke. Happened when the nozzle touched one of the Swiss clips holding the glass bed to the aluminum bed base. Measuring with a multimeter, I found out that the nozzle is GND and the aluminum bed bottom has very low resistance to the bed heater wires, meaning the touchdown caused a short circuit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
Can someone with a working board please measure DC voltage between the nozzle and aluminum bed base (Ender 3 preferably) both when the bed heater is off and on? I'd like to know if I need to take steps to avoid this kind of contact at all costs or if this was a fluke accident.
In the meantine, I've ordered a replacement LPC1768 and inductors to try and repair the damage. Also ordered a replacement board which will be my daily board. If this one is repaired, it'll serve as a backup unit.
вообще мне это напомнило историю одного знакомого, который мать болтами привернул к корпусу без вставок , то есть насмерть так, все выводные компоненты на корпус коротили =)))
но ничо, она выжила - входила в защиту и не включалась
но ничо, она выжила - входила в защиту и не включалась
AB
а кто как скр вставляет в ендер. я так вижу, что в родной корпус она не лезет удобно. придется походу корпус проектировать для нее
VS
а кто как скр вставляет в ендер. я так вижу, что в родной корпус она не лезет удобно. придется походу корпус проектировать для нее
валяется на столе без корпуса)
VS
штатное место установки - имхо провал