Timeline for Why is my PSU turning on and off automatically?
Current License: CC BY-SA 4.0
15 events
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| Apr 7, 2022 at 13:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Mar 9, 2022 at 6:05 | comment | added | Greenonline♦ | To me, if seems like you are attempting to draw too much current from the PSU, and it shuts down momentarily, as part of its self-protection. That seems to be the most logical, and obvious, reason. Try disconnecting one of the high current draw devices, i.e. the headbed, and then see if the PSU works OK. If so, then the heatbed needs a separate supply as per my previous answer. | |
| Mar 9, 2022 at 6:01 | comment | added | Greenonline♦ | Previously you had said that when an LED was connected to the PSU, then the LED blinked - giving the impression that only the LED was connected to the PSU. Now you are saying that with only an LED connected, the LED does not blink..! If previously you had connected the LED to the PSU, whilst the PSU was still connected to the RAMPS and exhibiting the stop/start behaviour, then obviously the LED would blink as well. So, to clarify: When not under load, the PSU is fine (both the old and the new PSU), but when under load the PSU stops and starts... is that correct? | |
| Mar 8, 2022 at 13:49 | comment | added | Michael | Hi, I already change to the new PSU. I also already test the PSU using LED. The LED constantly turned on and no blinks. But the issue is, when I plugged in the RAMPS 1.4, the PSU start giving the LED blinking again. | |
| Mar 8, 2022 at 12:55 | history | edited | Greenonline♦ | CC BY-SA 4.0 |
Added info from comment
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| Mar 8, 2022 at 12:47 | answer | added | Greenonline♦ | timeline score: 3 | |
| Mar 8, 2022 at 12:42 | comment | added | Greenonline♦ | Does the PSU behave in the same manner when not under load (without the printer or anything at all, connected)? Without photos of the inside of the PSU, or any results of testing various components within the PSU, it's going to be rather difficult to provide a definitive answer. | |
| Mar 8, 2022 at 10:04 | comment | added | 0scar♦ | It could be broken, buying a spare doesn't cost much and you'll be able to troubleshoot. But, since you have supplied another power source which doesn't show the intermittent on/off behavior, it is most likely the PSU is faulty. | |
| Mar 8, 2022 at 10:01 | history | edited | 0scar♦ | CC BY-SA 4.0 |
Improved formatting, title; edited tags
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| Mar 8, 2022 at 2:30 | comment | added | Navin | Connect a voltmeter, scope, or an led+resistor to the PSU output and see if it blinks or stays on continuously. | |
| Mar 7, 2022 at 17:48 | history | edited | Michael | CC BY-SA 4.0 |
added 3 characters in body
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| Mar 7, 2022 at 17:37 | history | edited | agarza | CC BY-SA 4.0 |
fixed capitalization, punctuation, grammar, formatting
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| Mar 7, 2022 at 16:45 | history | edited | Michael |
edited tags
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| S Mar 7, 2022 at 16:26 | review | First questions | |||
| Mar 7, 2022 at 17:37 | |||||
| S Mar 7, 2022 at 16:26 | history | asked | Michael | CC BY-SA 4.0 |