PSU (power supplies)

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How to: recapping the Mega STe power supply

Last post by Pacman « Sun Nov 11, 2018 6:30 pm
Replies: 36
by Pacman » Mon Oct 16, 2017 11:41 pm
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I recently decided to replace all the electrolytic capacitors (recap) in my Mega STe power supply (Phihong PSM-5341) as a safety measure, considering...
36 Replies

2849 Views

Last post by Pacman
Sun Nov 11, 2018 6:30 pm
NEW MSTE/TT & ST PSU ? (well not really)

Last post by troed « Thu Apr 12, 2018 5:00 pm
Replies: 1
by exxos » Thu Apr 12, 2018 2:41 pm

As many know I created alternative power supplies for the STF/E/Falcon. About once a week I get asked if I will design a new MSTE PSU. Basically the...

1 Replies

387 Views

Last post by troed
Thu Apr 12, 2018 5:00 pm
WHAT PSU CAPACITORS SHOULD I USE ?

Last post by exxos « Fri Aug 18, 2017 8:26 pm

by exxos » Fri Aug 18, 2017 8:26 pm

This is a question I get asked almost daily...

Before I explain some things, please considering buy the capacitors kits from my webstore if I sell...

0 Replies

627 Views

Last post by exxos
Fri Aug 18, 2017 8:26 pm
ATARI ST PSU CAPACITOR & UPGRADE INFORMATION

Last post by exxos « Fri Aug 18, 2017 8:21 pm

by exxos » Fri Aug 18, 2017 8:21 pm

Work I started in 2012 and spanning now 5 years later. I have been researching and offering replacement kits and advise to people with Atari PSU's....

0 Replies

963 Views

Last post by exxos
Fri Aug 18, 2017 8:21 pm
R205 100 ohm resistor in SR98 starting to get hot and smell

Last post by exxos « Tue Nov 13, 2018 11:40 pm
Replies: 14
by Icky » Tue Nov 06, 2018 12:25 am
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Tonight I turned on my STF Remake and the SR98 PSU resistor R205 100 Ohm 3W started to get hot and smell.

Fortunately nothing went bang and checked...
14 Replies

238 Views

Last post by exxos
Tue Nov 13, 2018 11:40 pm
Future PSU designs

Last post by exxos « Mon Nov 12, 2018 8:46 pm
Replies: 103
by exxos » Sun Sep 24, 2017 2:00 am
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As many know I designed my own PSU..

Though soldering the regulators is no fun :roll:

I have been looking around and found a soic8 regulator...
103 Replies

9340 Views

Last post by exxos
Mon Nov 12, 2018 8:46 pm
Replacement PSU for STf/STe

Last post by tzok « Thu Nov 08, 2018 7:55 pm
Replies: 1
by tzok » Wed Sep 12, 2018 10:03 pm

I've managed to fit a MeanWell RT-65B PSU into the STf case in place of original PSU. It works fine on my noisy STf, even better (less noise) than my...

1 Replies

146 Views

Last post by tzok
Thu Nov 08, 2018 7:55 pm
Jan Beta Mega ST

Last post by Maeke « Tue Nov 06, 2018 6:42 am
Replies: 7
by pobolycwm » Sat Nov 03, 2018 11:17 am

Just watched Jan Beta slap a Meanwell rd50a psu in his Mega ST, has anyone tried this with a STE? Will crack open and measure up the space to see if...

7 Replies

217 Views

Last post by Maeke
Tue Nov 06, 2018 6:42 am
2018 red edition exxos PSU specs

Last post by exxos « Fri Oct 05, 2018 5:08 pm

by exxos » Fri Oct 05, 2018 5:08 pm

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The latest PSU from exxos. The red edition . Featuring highly efficient high power modern switch mode chips from one of the leading...

0 Replies

191 Views

Last post by exxos
Fri Oct 05, 2018 5:08 pm
Discharging capacitors, PSU-testing with dummy loads

Last post by stween « Wed Oct 03, 2018 10:43 pm
Replies: 33
by Pacman » Tue Aug 29, 2017 12:05 pm
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I have two questions concerning before and after recapping an Atari PSU:

1) what is the safe and proper way to discharge a (high voltage) capacitor...
33 Replies

3511 Views

Last post by stween
Wed Oct 03, 2018 10:43 pm
Good Quality Pico PSU

Last post by exxos « Sun Sep 30, 2018 5:26 pm
Replies: 3
by GiancarloCP » Sat Sep 29, 2018 2:53 am

Hello,
I am a normal computer user, after looking reviews to Good Quality Pico PSU I found a one technical review here:

Just for curiosity, I would...

3 Replies

172 Views

Last post by exxos
Sun Sep 30, 2018 5:26 pm
SR98 trimmer pot

Last post by sandord « Fri Sep 28, 2018 5:39 pm
Replies: 2
by sandord » Sat Sep 22, 2018 10:05 am

I've recapped my friend's SR98.

Now, the instructions say:

The trimmer pot may need to be adjusted back to 5.00volts on the 5V rail.

Since I...

2 Replies

139 Views

Last post by sandord
Fri Sep 28, 2018 5:39 pm
Mega ST2 psu failure

Last post by atari030 « Tue Sep 25, 2018 12:12 pm
Replies: 8
by Erikswe » Sun Sep 23, 2018 12:35 pm

I got myself a Mega St2 and it doesn't power up at all, nothing at all happens. I thought I would start with the PSU. It has a Mitsumi sr188 Psu....

8 Replies

255 Views

Last post by atari030
Tue Sep 25, 2018 12:12 pm
ASP34-2 REV1 recapping how-to

Last post by exxos « Mon Sep 24, 2018 10:54 am
Replies: 3
by sandord » Mon Aug 13, 2018 10:27 pm

I recapped my ASP34-2 REV 1 PSU the other day, replacing 7 capacitors and the rectifier.

I thought I'd do a quick report to share my experience with...

3 Replies

200 Views

Last post by exxos
Mon Sep 24, 2018 10:54 am
Recapping Falcon PSU - My rectifier is different

Last post by derkom « Wed Sep 19, 2018 5:24 pm
Replies: 8
by derkom » Wed Sep 19, 2018 10:39 am

I'm in the process of recapping a Falcon PSU with exxos' kit (hoping to tame a ~300 mV ripple on the +12V rail) and after replacing all the caps,...

8 Replies

199 Views

Last post by derkom
Wed Sep 19, 2018 5:24 pm
PSU failure images

Last post by tzok « Wed Sep 12, 2018 10:09 pm
Replies: 2
by exxos » Wed Nov 22, 2017 8:28 am

Submit your Atari PSU blow up images here :)

cap-blow.jpg
Image by John Leonard.

2 Replies

587 Views

Last post by tzok
Wed Sep 12, 2018 10:09 pm
Video problem on STE

Last post by exxos « Fri Sep 07, 2018 1:48 pm
Replies: 8
by Strider » Mon Mar 12, 2018 9:32 pm

Hello,

Yesterday I've recapped the PSUs of my 2 STEs.
I attached a photo, the PSUs have been controlled before starting the STEs.

However I have...

8 Replies

875 Views

Last post by exxos
Fri Sep 07, 2018 1:48 pm
STFM STE PSU recommended capacitors

Last post by exxos « Thu Aug 30, 2018 3:14 pm
Replies: 1
by zack4mac » Thu Aug 30, 2018 2:28 pm

Hello all I am new to Exxos forum and electronics but I have a couple of questions.

I really need some advice, my DVE DSP-508A psu and have read the...

1 Replies

125 Views

Last post by exxos
Thu Aug 30, 2018 3:14 pm
Dead Exxos PSU out of the blue

Last post by exxos « Tue Aug 14, 2018 10:08 pm
Replies: 31
by mikro » Wed Jun 13, 2018 8:57 pm
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Hi guys,

I hope this is the right place to post. I purchased one 230V PSU from Chris on 30/08/2016 but instead of celebrating our two-year...
31 Replies

2062 Views

Last post by exxos
Tue Aug 14, 2018 10:08 pm
Exxos Replacenent PSU’s for STe

Last post by exxos « Sun Jul 22, 2018 9:15 pm
Replies: 1
by Axnfell » Sun Jul 22, 2018 7:50 pm

Hi Exxos,

I purchased one of your great new toriodail PSU for my old ST, but have noticed that now I want another that they are out of stock, is it...

1 Replies

162 Views

Last post by exxos
Sun Jul 22, 2018 9:15 pm
Which recap kit for PhiHong 2512-2???

Last post by Shugs81 « Wed Jul 18, 2018 10:13 pm
Replies: 5
by Shugs81 » Wed Jul 18, 2018 6:03 pm

Hi peeps...

Looking to place an order tonight and was wondering which recap I need from the store??

Thanks peeps!!

5 Replies

311 Views

Last post by Shugs81
Wed Jul 18, 2018 10:13 pm
Exxos PSU + CT2B Falcon

Last post by exxos « Mon Jul 16, 2018 10:39 am
Replies: 17
by mikro » Thu Jul 12, 2018 10:10 pm
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I guess this will be the first Exxos PSU in such Falcon. I must say I'm really impressed by its thermal characteristics -- the CT2 is draining power...
17 Replies

777 Views

Last post by exxos
Mon Jul 16, 2018 10:39 am
How to recognise/transform a 110V Falcon PSU?

Last post by exxos « Tue Jul 10, 2018 1:33 pm
Replies: 8
by mikro » Sun Jun 24, 2018 11:54 am

I have two Falcon PSUs which have gone bad. One just making tsk-tsk-tsk-tsk sounds (and power LED blinking) and one which... ehm, had sort of...

8 Replies

503 Views

Last post by exxos
Tue Jul 10, 2018 1:33 pm
Falcon PSU making 'tsk-tsk-tsk' sound

Last post by exxos « Wed Jul 04, 2018 9:01 pm
Replies: 13
by mikro » Sat Jun 30, 2018 9:41 pm
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As mentioned in this post one of my PSUs is making very quiet 'tsk-tsk-tsk-tsk' sound. I thought recapping would do some good and oh boy, I was...
13 Replies

766 Views

Last post by exxos
Wed Jul 04, 2018 9:01 pm
Mega PSU

Last post by atari030 « Wed Jun 27, 2018 10:40 pm
Replies: 2
by atari030 » Wed Jun 27, 2018 10:46 am

I was just playing with my stuffed Mega4 and have something weird going on. I bought another PSU, I needed one anyway. It is doing the same as my...

2 Replies

478 Views

Last post by atari030
Wed Jun 27, 2018 10:40 pm

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PSU (power supplies)

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