Search found 4000 matches

by exxos
Mon Nov 12, 2018 9:44 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 112
Views: 4842

Re: Hissing and whistling in the STe audio output

No real change then :( If anything looks worse ? Though that could be as the caps are "high up" on the board... I think it would be interesting to cover the channel with foil ( insulated with paper first of course ;) ) connected to gnd to screen the audio and see if its picking up interference via R...
by exxos
Mon Nov 12, 2018 9:01 pm
Forum: Terriblefire's channel
Topic: Terriblefire Accelerators
Replies: 82
Views: 1803

Re: Terriblefire Accelerators

Fine by me :thumbup:

Just caught up with your previous stream... You have fun routing boards! I was like that once, now its more, shoot me now... :lol:
by exxos
Mon Nov 12, 2018 8:46 pm
Forum: PSU (power supplies)
Topic: Future PSU designs
Replies: 103
Views: 9319

Re: Future PSU designs

In stock! Well these are basically pre-orders.. shipping will start end of the week... 110V ST ( 7 of ) https://www.exxoshost.co.uk/atari/last/storenew/#0030 230V ST (10 of) https://www.exxoshost.co.uk/atari/last/storenew/#0029 The next batch is in the making but might not appear until after xmas.
by exxos
Mon Nov 12, 2018 8:29 pm
Forum: Terriblefire's channel
Topic: Terriblefire Accelerators
Replies: 82
Views: 1803

Re: Terriblefire Accelerators

Pretty much follow this plan thesedays. Big 1206 under the chip, flooded ground and power under the chip and a 4 layer board. I most definitely go with the multilayer route. its effectively the same as putting 4-5 smaller caps in the same space. :thumbup: Yes , Not many people give much considerati...
by exxos
Mon Nov 12, 2018 7:47 pm
Forum: STF REMAKE PROJECT
Topic: RESET circuit tweaks
Replies: 104
Views: 739

Re: RESET circuit tweaks

Icky wrote:
Mon Nov 12, 2018 7:19 pm

Challenge accepted
:dualthumbup:
by exxos
Mon Nov 12, 2018 7:44 pm
Forum: Terriblefire's channel
Topic: Terriblefire Accelerators
Replies: 82
Views: 1803

Re: Terriblefire Accelerators

The fundamental question is why we actually need caps in the first place..The topic is actually rather complicated and I wrote this all off the top of my head... so here goes... Technically if you had a regulator in the centre of PCB, and chips placed all the way around it, the voltage regulation wo...
by exxos
Mon Nov 12, 2018 6:36 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 112
Views: 4842

Re: Hissing and whistling in the STe audio output

sandord wrote:
Mon Nov 12, 2018 6:29 pm
I'm putting the caps in my DAC-fixed STE now so don't worry :lol:
:dualthumbup:
by exxos
Mon Nov 12, 2018 6:08 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 112
Views: 4842

Re: Hissing and whistling in the STe audio output

Well, I didn't know that :D I have very little experience reading schematics so I'm walking this path guessing left and right :) It's the electrolytic's which go bad over time, a smaller ceramic type ones generally do not go wrong. Of course, my DAC FIX board also needs to be fitted to the machine ...
by exxos
Mon Nov 12, 2018 5:58 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 112
Views: 4842

Re: Hissing and whistling in the STe audio output

sandord wrote:
Mon Nov 12, 2018 4:40 pm
I've got 8 of those large SMT ceramics and there are 10 electrolytics on the schematic. Which two caps would I skip best?
Its the 47uFs to replace with the SMT ones ( so looks like 2 caps )
by exxos
Mon Nov 12, 2018 5:56 pm
Forum: ATARI FOR SALE & WANTED
Topic: FOR SALE STF/E KEYBOARDS (UK)
Replies: 28
Views: 500

Re: FOR SALE STF/E KEYBOARDS (UK)

You can replace the parts, and fix them, is pretty straightforward really...

http://www.exxoshost.co.uk/atari/last/k ... /index.htm