Hi,
I have a power supply that I need to replace and having trouble sourcing it without an exorbitant shipping fee.
I’m looking for an alternative to the bicker BEP-506H.
I found something that Meanwell supply that gives me the correct voltages I need (RPT-7503).
My trouble with this is that it does not use the same pin out as what I have. The existing unit is soldered directly onto the PCB where as this requires a plug.
The output is simply a 20 pin ATX motherboard connector.
What a conundrum we have here. The simplest answer I can think of is bodge wire an adapter together. It is unlikely that you will find an adapter for what you are after. If you can replace the end of the device you are connecting that is probably the simplest solution available.
Just ensure that you use wires that are rated for what you are after and don’t work on it while it is live.
Hi Anthony
This Bicker PSU seems to be a standard ATX unit and as such would have a 24 pin connector as standard.
The MeanWell unit you linked does tot have this connector also is missing a couple of outputs, 5Vsb and -12V. In other words it is NOT an ATX supply.
I would be pretty confident that a replacement would probably be available. There are (or used to be) quite a lot of suppliers who sell ATX supplies of varying flavours.
As power supplies by their very nature are pretty heavy any postage is likely to be expensive.
Cheers Bob
I can’t quite follow your description. The Meanwell RPT7503 uses an 8-pin connector designed for flying leads. The existing unit has leads, which I would expect to end in an ATX connector, which you have mentioned, but you then comment that it is soldered to the PCB.
If the existing unit is soldered to the PCB then you could make up an adapter using a JST VHR 8 pin housing with JSTSVH-21T-P1.1 terminals (according to the datasheet) and solder the flying leads to the existing solder points. Or have I misunderstood your description?
Hi Jeff
According to the MeanWell data sheet the MeanWell supply has outputs of 3.3V, 5V and 12V. It does not have the ATX voltages of 5Vsb and -12V so is not a direct replacement irrespective of connector.
That is of course if Anthony is actually using this as an ATX computer supply.
If he is just using this ATX supply for something else these missing voltages might not matter. In this case a direct replacement might not be necessary. We don’t know anything about the intended use yet.
Cheers Bob
Hi Robert,
It is to power a motherboard. Jetway NF 94.
However regarding the shipping aspect, these are very small and not like standard PC power supplies. Two of these can fit in my hand but it’s the premium from Bicker and euro conversion along with export that’s the problem.
In that case, the important bit is the other end of those leads!
If the leads end in a 20-pin ATX connector then any ATX power supply will plug straight in. However, you have stated that the leads are soldered to the PCB. Did you mean that the leads from the ATX connector are soldered to the power supply PCB?
If the PC mother board has a ATX 20-pin connector then you should source a ATX power supply with a matching connector and not consider soldering anything.
He might have done but is he sure.
According to the data sheets
Bicker
and MeanWell 3rd page
the MeanWell is missing a couple of voltages.
Maybe his computer board does not need these missing volts. He has not said anything about this.
Cheers Bob
That is a very major problem. without actually seeing the fixing I don’t know what you can do about this. Repair of the existing PSU may be an option if you can find someone familiar with that sort of device.
Cheers Bob
OK. So the problem is that you want a 60W ATX supply, with a standard ATX connector, a SATA with a double in-line header and one right-angle header, and a 12v 2-wire fan connector, but with the form factor to fit in the cabinet. That would be 126mm x 55mm x ~40mm.
Rather than hunting for that exact specification it might be more productive to examine the cabinet and determine exactly how much flexibility there is in the mounting area. However, your choice in low-power ATX supplies with a small form factor is going to be limited, and I don’t know of any better way to find it than scouring the specifications for the major suppliers.
If you go with the RPT-7503 or similar then one option is to cut the existing ATX, SATA and fan cables (I presume the original BEP-506H can be cannibalized) and wire them through to a custom adapter board with several buss bars mounted - one big one for the earths and one smaller one for each voltage. Then connect the bus bars to the new supply. Then find space for it in the cabinet.
But note that there are differences between an ATX supply and a generic multi-voltage supply (assuming that all the voltages you require are available). The ATX front panel power switch is a low-voltage control (not 240V!), there is a 3.3V feedback control, and two slightly different 5V supplies that probably shouldn’t be connected together, so the wiring is not simple. Also there are separate current requirements for each voltage.
I think the one marked +5Vsb means +5V stand by and is on while the 240V is connected and on.
I think this provides some control power for the front switch to switch on the main power supply. Possibly other things in the computer as well. Like keeping the on board battery charged etc. The MeanWell does not have this.
All up my personal thoughts (for what they are worth) are that unless you really know what you are doing substituting anything but an ATX supply could me a big mistake. You would have to know exactly what each of these supplies does on the ATX and the mother board. I personally don’t know so would not do it.
But that is my personal opinion.
Cheers Bob
Let me pivot here. What power supply can I get to replace it?
This is currently in use in an environment. It runs a PC and also supplies power to peripherals (along with the 24v PSU.
Pictures showing what space I am working with.
