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Post by The Bluestar Whisperer on Jul 15, 2024 16:38:37 GMT
Just had the 4th machine out of 18 (6T0S/27K hrs BSP w/BB) in one particular facility experience a 24v low condition in the last 2 months. I guess capacitors will be added to my ever-growing list of annual PM procedures this year along with heat exchangers, BC membranes, keypads, keyboards...
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Post by dave74 on Jul 15, 2024 19:19:27 GMT
Is replacing the capacitors solving the problem? Is there anything unique about the one facility?
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Post by The Bluestar Whisperer on Jul 15, 2024 20:13:40 GMT
Is replacing the capacitors solving the problem? Is there anything unique about the one facility? For the first 2, yes, those haven't come back to me as of yet. The 3rd one it seemed to, but then a "5v low" showed up about a week later that I am still chasing. This latest one I just replaced capacitors and will have to wait and see. The problem is, I can never get them to duplicate in the back and the techs have already shut them off to quiet the alarm before I can get to it. It's virtually impossible to troubleshoot without the condition being present. I was just kind of making the point that a lot of the parts we deal with in these machines have a certain lifespan and that it is something to be mindful of as a BioMed. I just try to head them off and make certain things a part of my PMs before I get 4 machines pulled in a day for really obscure or nonsensical reasons. |
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Post by The Bluestar Whisperer on Jul 25, 2024 17:06:12 GMT
UPDATE:
All 4 machines have been out on the floor, the most recent for a little over a week and none of them have come back and I haven't heard anything from the staff since. Even the 5v low hasn't resurfaced after rechecking everything. I have to assume at this point that the capacitors are fixing the issue coupled with meticulously going through the card cage, power supply and modules, reseating boards and connectors.
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Post by justabiomed on Jul 29, 2024 15:48:11 GMT
Testing for 24V. This is not official but my common find. Turn the machine on and put it into heat disinfect. If the debug screen shows 24V going to below 23.1 and very very erratic, then 99% of the time it has been the blue capacitor. I would say 100% but I never feel comfortable saying that.
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Post by The Bluestar Whisperer on Jul 29, 2024 16:09:51 GMT
Testing for 24V. This is not official but my common find. Turn the machine on and put it into heat disinfect. If the debug screen shows 24V going to below 23.1 and very very erratic, then 99% of the time it has been the blue capacitor. I would say 100% but I never feel comfortable saying that. That is one of the things that I figured out with the most recent one and I noticed exactly what you are stating. It might not be 100%, but really close. I would say that if it is erratic like you said that the capacitor is starting to fail and cannot maintain the 24v constant. I would commonly see it dipping below 24.0v for longer periods and getting much closer to going under 23.0v and also very erratic. If it is more stable and still low then I think you are more likely leaking voltage somewhere, or maybe the transformer is not putting out the proper voltage and is starting to go. If you have an active 24v condition the best place to start is testing the transformer (for correct voltage output) and the extender board 24v points, you can verify what you have at the transformer on the extender board. The extender board can point you in a direction if any of the 3 points are low or completely missing (A= Monitor/touchscreen/power logic, B= to all boards, C= to all modules). |
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Post by justabiomed on Aug 14, 2024 18:15:21 GMT
I check directly at the back of the power control board at the back of the power cord to the mother board.
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Post by robertb on Aug 24, 2024 0:46:05 GMT
it's an ongoing issue that cannot be explained or remedied sounds like yours is with the capacitor if that does not work out I would have the local electric company place a voltage monitor in your clinic to be sure you are getting adequate voltage We had a clinic who did this and found that their voltages were below 110 sometimes as low as 104 105 but we had the same symptoms you are speaking of a lot of 24 volt low issues that did not fix the problem.. They ended up replacing a transformer near the clinic then all our problems went away
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