[sdiy] Powering 4ms pod

[Didier Leplae]

I did check contact between the leads on the back of the tip and the contacts where the power jack are soldered inside the 4ms pod with my multimeter continuity setting and it seems to be making a connection. Maybe the 0.4mm difference is negligible?
Also, the on and off isn’t random like a bad connection, but very regular.

Does this “motor boating” idea make sense? It is a 90w power supply and the 4ms requires minimum 20w


> On Nov 1, 2022, at 4:42 PM, Gerry Murray via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> Assuming you're able to get the plug to make a temporary contact, it could be the supply is underrated for the turn-on surge of the 4mS pod.
> Seems like it might be 'motor boating'.
> Power comes on, post-regulator caps draw current, external supply collapses, regulator turns off, supply recovers. Repeat.
> Just a possibility.
> Gerry
> 
>> On 01/11/2022 16:28, Neil Johnson via Synth-diy wrote:
>> HI,
>> 
>> Didier Leplaewrote:
>>> I went to a local electronics store and bought a sort of universal supply. (The brand is “Classic” and model# PSE50249)
>>>  It has a tip which seems to fit, but says it is “5.5/2.5mm, 12mm”.
>>> When I plug it in to the 4ms pod, the power flashes on and off, every second or so, even with no modules or ribbon cables attached.
>>> Testing the supply with a voltmeter, it is indeed positive tip and around 19.5V.
>> Is it something like this:
>> https://www.csi-elektronik.de/PSE50249-EU-Universal-Netzteil-90W-11-ADAPTER-185-20V-45A-90W-C6
>> 
>> If so choose the correct tip as Steve suggested.
>> 
>> Neil
>> 
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