Search found 93 matches

by wyerd
01 Jul 2015 22:55
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

Mark,

Can you confirm the ouput connections of F2 please?

Red connection to DIN Plug 3
Black connection to DIN Plug 4
Black connection to R2 of LED
Black connection to black output of strip board - This is the connection I can't see in the photos.

Thanks.
by wyerd
01 Jul 2015 22:05
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

Connected it to a 9v battery. Adjusted the screw until mulimeter read 16v. Job done!
by wyerd
30 Jun 2015 23:18
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

Mark, How do you set the output voltage? LM2577 step-up DC-DC converter. eBay/che'261211800 1 £1.63 £1.63 1 1 LM2577 DC to DC Adjustable Converter Step-up Cir I used a Chenyao19870517 LM2577 DC to DC adj Set the output voltage to 16V before fitting
by wyerd
24 Jun 2015 21:23
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

Thanks for the assistance Mark. Mains side is now wired up and ready to connect to the transformer. Continuity checks out as well this time which alerted me to the wiring issue on the switch. http://kimberlinwyer.com/images/img_1633.jpg http://kimberlinwyer.com/images/img_1634.jpg The switch reminds...
by wyerd
24 Jun 2015 19:34
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

OK, thanks. 3 is shown on the rear, together with 6 on the right, but there isn't a terminal in the space.
by wyerd
24 Jun 2015 19:16
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

I can't make out the wires!

I've magnified the PDF and numbered the terminals:-

Image
by wyerd
24 Jun 2015 18:34
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

Yes it is.
by wyerd
24 Jun 2015 18:14
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

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.wpengine.netdna-cdn.co...
by wyerd
23 Jun 2015 22:30
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

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?
by wyerd
23 Jun 2015 22:11
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 197359

Re: Building a replacement MTX PSU

1 and 2 is 27.1 Ohms 3 and 6 is 32.5 Ohms Is that OK? Assuming you mean: 5 and 6 is 32.5 Ohms Yes :D . Because the wire for one winding is slightly longer than the other, there is normally a slight difference. Once you have wired up the wiring to the primary (input) of the transformer, measure the ...