Maas SPS-50II Power Supply Panel Meter Conversion 

Yup, I never documented it.......been meaning to open it up again to have a look....:-)

That's a really good power supply I would change Nting in it

Nice mod Ian!!!... Love the vids... Keep em coming and thanks!

Hi, I have the exact same power supply. I did a stupid mistake and reversed polarity by accident.... By any chance would you have a pictures or schematics for this unit? I burnt a some kind of resistors near the +ve cable marked as J2 and J3 that attaches to the motherboard. Can't find any info online besides your video..

Great Job Ian I like the way u think. The bezel is worth painting black that would finish it off nicly. Gary

hi,i buy one because my president lincoln need more power. i like alote,but is good?

My old BNOS power supply blew off damaging my radio. Is this power supply reliable? Is it still working well?

Lovely job Ian but I hope you don't pop the ammeter. Those meters only go to 10A. They do a 50A shunt and a 100A shunt but they need a bit of tweaking to get any accuracy. For the money though - fantastic. EBAY - DC 10/50/100 A Voltmeter Ammeter LED Dual Digital Volt Amp Meter Test Gauge Tool £ 4.03 & £4.99

Hi, I'm a hobbyist and new to your channel, I was wondering if you were willing to share the schematic for your dummy load if you have one?

WHERE I CAN FIND THOSE COMPONENTS I AM PLANING TO CONVERT A PYRAMID PS-21K THAT HAVE ONLY ONE METER FOR AMP AND IS DAMAGE I WOULD LIKE TO DO YOU FULL PROJECT ON IT THANKS FOR HELP.

You failed to show in detail your/the Ammeter pickup circuitry ?

Here is the parts he used : DC/DC Converters : www.ebay.com/itm/390893637948 Led Panel Meters : www.ebay.com/sch/i.html?_odkw=volt+meter&LH_BIN=1&_from=R40&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xled+panel+meter&_nkw=led+panel+meter&_sacat=0

any links for the meters ?

Please can you give the link for the meter , many thanks

Why wreak such beautiful analog meters just connect an external digital meter if need be.

Hi, The dummy load schematic is on my website - w w w.ianjohnston.c o m Ian.

those mosfets are expensive. and I cant find that haetsink.

nice videos but please Stop saying eeerrr...uuummm