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Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 22:30
by wyerd
I'm trying to figure out how to connect everything together and at what stage to fit them to and inside the box. Did you do all the soldering outside the box?
Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 22:38
by 1024MAK
No. I try to do as much as possible outside the box, as a slight misjudgement when moving a hot soldering iron and you make a mess of either the insulation of a wire you are not working on, or the plastic of the box
It does mean you have to think through what you are doing first. Then visualize it in your head. Maybe do a dry fit to confirm. Correct silly mistakes in the plan (make notes if it helps) so that in practice, it goes smoothly (myself having learn the hard way more than once
).
I forget now the exact order, but the last mains wiring that I did was soldering to the transformer.
Mark
Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 22:40
by 1024MAK
Okay some external shots:
- finished switch, LED and fuseholder.JPG (261.12 KiB) Viewed 13329 times
- finished switch, LED and fuseholder 2.JPG (237.77 KiB) Viewed 13329 times
Mark
Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 22:52
by 1024MAK
Final wiring up of the mains connections and the wiring to the transformer:-
- Wiring up the transformer.JPG (170.21 KiB) Viewed 13329 times
- Wiring up the transformer2.JPG (150.95 KiB) Viewed 13329 times
- Wiring up the transformer3.JPG (201.21 KiB) Viewed 13329 times
In the top right corner of this last photo, you can just see the cable tie over the heatshrink of the output cable...
Mark
Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 23:20
by 1024MAK
Re: Building a replacement MTX PSU
Posted: 23 Jun 2015 23:25
by 1024MAK
5A fuseholder and LED inside the case:
- 5A fuseholder and LED inside the case 1.JPG (210.79 KiB) Viewed 13328 times
Finished IEC mains connector - outside view:
- Finished IEC mains connector - outside view.JPG (162.66 KiB) Viewed 13328 times
Okay, that's all the photos that I have from last year posted up.
Rather silly of me, but the photos I took after these were posted earlier up in this thread
here .
Mark
Re: Building a replacement MTX PSU
Posted: 24 Jun 2015 18:14
by wyerd
Mark,
This should be easy, but I can't figure out which terminal on the switch is the input live & neutral and the corresponding outputs. There's noting on the switch itself apart from terminal numbers and the tech PDF doesn't say either.
http://2nxod5497ve018julv28ilzx3fd.wpen ... WR_PPR.pdf
Re: Building a replacement MTX PSU
Posted: 24 Jun 2015 18:32
by 1024MAK
Is your switch an illuminated type?
Mark
Re: Building a replacement MTX PSU
Posted: 24 Jun 2015 18:34
by wyerd
Yes it is.
Re: Building a replacement MTX PSU
Posted: 24 Jun 2015 18:52
by 1024MAK
If you have a look at the pictures in
this post (hint: it's the right hand terminal in the picture here) and the following ones, especially
this set of pictures you can just make out very thin wires that go from the terminals to the neon. These are the output terminals. It does not normally matter which is live/line and which is neutral. Your switch may be the same.
If this does not help, please post some good pictures of your switch. The PDF you posted does include numbered terminals in one of the diagrams, but the numbers are unreadable because they are so small
Mark