Page 1 of 1
When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 10:14
by rubber_jonnie
So, looking at the datasheets for the SLP2040P from my A5000 PSU (Low 12v rail like my Mac Classic) which has a dead diode (There are two in the package), I found that the MBR2045CT has slightly improved specs over the original and should be fine as a replacement.
I would swear to god I checked the package dimensions on the datasheets as well as the electrical spec, but it seems my brain was mush at the time, and the sizes don't quite match :)
PXL_20221111_093253401.jpg
I'm confident that the part will work, it's of a slightly higher spec than the original, and I should be able to make it fit, so I can still get on with the repairs, but annoying nonetheless.
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 10:18
by exxos
We all been there :lol:
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 10:22
by rubber_jonnie
exxos wrote: 11 Nov 2022 10:18
We all been there :lol:
:dizzy:
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 10:32
by exxos
...and plastic vs metal packages....different pinouts...bent legs vs straight legs.. :lol:
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 10:48
by rubber_jonnie
exxos wrote: 11 Nov 2022 10:32
...and plastic vs metal packages....different pinouts...bent legs vs straight legs.. :lol:
Hell yeah...
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 12:18
by stephen_usher
It's almost impossible to find the right sized part on most suppliers' web sites.
Re: When your search for an equivalent goes a bit wrong...
Posted: 11 Nov 2022 14:35
by rubber_jonnie
stephen_usher wrote: 11 Nov 2022 12:18
It's almost impossible to find the right sized part on most suppliers' web sites.
You're not wrong.
Re: When your search for an equivalent goes a bit wrong...
Posted: 15 Nov 2022 16:18
by rubber_jonnie
Well I'll be jiggered.
I got an equivalent, the size is correct, the diode direction is correct and it has a better spec than the original.
Does it work? Does it heck!! You can hear the PSU 'ticking' as it tries to start, and as soon as I drop in the original, there it goes and works. Trouble is I still have the same issue and the 12V/5v rails start low and creep up like on the Mac Classic before I replaced the switching transistor. I'll just have to try and find the real thing.
What is annoying is that I can't find a schematic for the PSU, it'd solve a lot of problems if I could.