Search found 8 matches

by Realloy
Tue Oct 02, 2018 6:11 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 47743

Re: Icky - Progress

Next list of things to work through: Scart cable - still seeing flicker and on some monitors whiteout. In addition also see slight noise scrolling up the screen. Modifying cable to improve grounding and shielding. After this may tryout other suggestions from Exxos. Keyboard / Mouse - getting key re...
by Realloy
Sun Sep 23, 2018 3:57 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: Video connector un-f*ck
Replies: 22
Views: 2112

Re: Video connector un-f*ck

You could, but it is a pain in the a** to solder those. So easier and probably cheaper to do on board. I have no problems in soldering them, many people have complained about this and are soldering them with the pins in its place and the plastic melts ,,, but you can actually pull them out and sold...
by Realloy
Sun Sep 23, 2018 2:34 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: Video connector un-f*ck
Replies: 22
Views: 2112

Re: Video connector un-f*ck

Wouldnt it be possible to re route with Male-female connectors, it feels a bit unnecessary to order one PCB for just this ?
s-l300 (1).jpg
s-l300 (1).jpg (10.46 KiB) Viewed 864 times
s-l300.jpg
s-l300.jpg (10.53 KiB) Viewed 864 times
Just a thought.

Johan
by Realloy
Mon Sep 17, 2018 8:33 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: ALPHA MODIFICATIONS
Replies: 85
Views: 10332

Re: ALPHA MODIFICATIONS

i can see all the chips have a decoupling capacitor,,, but what about BAD DMA ? is there one and where? or is it not necessary?
by Realloy
Sun Sep 16, 2018 11:55 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: ALPHA MODIFICATIONS
Replies: 85
Views: 10332

Re: ALPHA MODIFICATIONS

After cutting the trace on both sides of R920 ,,,, measure between D7 and the cut free R920 i get zero ohm, those two point must go to positive plane in pcb, so i guess no need to move the R920.

And also i noticed that the holes for the PSU is mirrored on the PCB.. Maybe you already know this..
by Realloy
Tue Sep 11, 2018 9:03 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: PCB Build - Progress - Post your Pics here :-)
Replies: 135
Views: 12366

Re: PCB Build - Progress - Post your Pics here :-)

Almost done with mine some connectors and the develish resistors in RGB and some touch up and overlook of all the solderings
Upload.png
Upload.png (697.09 KiB) Viewed 928 times
Upload2.png
Upload2.png (640.39 KiB) Viewed 928 times
I solved the keyboard connector
;)
by Realloy
Sun Sep 02, 2018 4:01 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: ALPHA PARTS LIST
Replies: 26
Views: 6718

Re: ALPHA PARTS LIST

exxos wrote:
Fri Aug 17, 2018 5:06 pm
Small change, the 2.2K resistors packs will be 4.7K.

There is a 20uF cap in the reset circuit, but will supply a 10uF one (makes no odds to anything).
The Resistor SILs are they Isolated Resistors or Bussed Resistors or even Dual Terminator Packs

/Johan Hansson
by Realloy
Mon Jul 30, 2018 8:21 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: NEW LAYOUT
Replies: 21
Views: 3906

Re: NEW LAYOUT

Im up for one board... :roll:

Go to advanced search