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Monitor recapping and low ESR

Last post by chiark « Fri Feb 22, 2019 4:22 pm
Replies: 54
by sandord » Mon Oct 08, 2018 1:52 pm
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I'm planning to recap two Commodore 1084S-D2 and a 1084S-P1 monitors.

I've assembled part lists for both (they are quite different in internal...
54 Replies

3620 Views

Last post by chiark
Fri Feb 22, 2019 4:22 pm
2 Layer vs 4 Layer PCB EMC TESTED (EEV Video)

Last post by DrF « Sat Feb 09, 2019 10:04 am

by DrF » Sat Feb 09, 2019 10:04 am

Topic pops up now and again round here, here's a video with some info on it, I thought was useful anyhow :D

Exxos always ranting about interference...

0 Replies

353 Views

Last post by DrF
Sat Feb 09, 2019 10:04 am
Resistor exploded in my monitor

Last post by exxos « Sun Jan 27, 2019 5:09 pm
Replies: 34
by sandord » Sat Dec 22, 2018 9:24 pm
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Today I soldered a new power switch in my Commodore 1084S-D2 monitor.

When I turned it on, there was a loud bang, rather large flash and a small...
34 Replies

2542 Views

Last post by exxos
Sun Jan 27, 2019 5:09 pm
Undeletable objects in Eagle ?!

Last post by exxos « Fri Jan 25, 2019 5:01 pm
Replies: 9
by exxos » Thu Jan 24, 2019 8:51 pm

At some point I must have added in some squares to stop the autofill filling areas I didn't want it to go.. only.. they seem to be on the top and...

9 Replies

311 Views

Last post by exxos
Fri Jan 25, 2019 5:01 pm
When pins look shorted but are not

Last post by TheNameOfTheGame « Fri Jan 25, 2019 3:16 pm
Replies: 2
by exxos » Fri Jan 25, 2019 2:01 pm

So been trying to remove a shorted between 2 pins, only to realise they are actually linked on the PCB! :roll:

I am mentioning it here as its...

2 Replies

127 Views

Last post by TheNameOfTheGame
Fri Jan 25, 2019 3:16 pm
Eagle libs - why you can't trust them

Last post by rpineau « Tue Jan 08, 2019 9:36 pm
Replies: 8
by exxos » Tue Jan 08, 2019 5:48 pm

TQFP64 package.. Pads are not aligned correctly to device.. Just look at the overhang on the IC to the print out of the bads on the might hand side....

8 Replies

492 Views

Last post by rpineau
Tue Jan 08, 2019 9:36 pm
KiCAD help me..

Last post by PaulJ « Mon Jan 07, 2019 6:45 pm
Replies: 19
by PaulJ » Tue Dec 18, 2018 4:09 pm
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For all you kicad experts out there. I'm attempting to layout a simple board that makes a board to convert a 28 pin prom foot print to a 32 pin PLCC....
19 Replies

918 Views

Last post by PaulJ
Mon Jan 07, 2019 6:45 pm
Strange part connected to flyback of Atari SC1224

Last post by PaulJ « Mon Jan 07, 2019 2:12 pm
Replies: 12
by sandord » Sun Jan 06, 2019 6:37 pm
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I've just opened up my beloved Atari SC1224 monitor to make a revision parts list. I'm going to replace all electroylic caps, the HOT, VOT, the...
12 Replies

424 Views

Last post by PaulJ
Mon Jan 07, 2019 2:12 pm
Soldering Irons

Last post by rubber_jonnie « Fri Jan 04, 2019 9:01 am
Replies: 26
by exxos » Thu Nov 02, 2017 8:32 pm
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Another common question I get is what soldering irons do I use...

SOLDERING IRON I USE.

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I used this one because it is...
26 Replies

3336 Views

Last post by rubber_jonnie
Fri Jan 04, 2019 9:01 am
Tip restorer testing

Last post by Icky « Fri Jan 04, 2019 8:56 am
Replies: 16
by exxos » Thu Dec 06, 2018 5:48 pm
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I got one of these to try...

IMG_3671.JPG

Before...

IMG_3672.JPG

Oddly it smells like fruitcake as its just come out of the oven or...
16 Replies

774 Views

Last post by Icky
Fri Jan 04, 2019 8:56 am
EAGLE CAD LIB EDITOR TUTORIAL PART 3

Last post by PaulJ « Fri Dec 28, 2018 5:24 pm
Replies: 8
by exxos » Thu Dec 27, 2018 4:42 pm

This guide will (try to) explain how to create a simple part for a library. In this example I will create a PLCC44 ROM..

I know for a fact there is...

8 Replies

279 Views

Last post by PaulJ
Fri Dec 28, 2018 5:24 pm
EAGLE CAD SCHEMATIC EDITOR TUTORIAL PART 1

Last post by exxos « Thu Dec 27, 2018 3:39 pm
Replies: 20
by exxos » Tue Dec 18, 2018 10:22 pm
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I know people are struggling with getting started with Eagle. I don't think later versions really help with the confusion. So here is version 5.6 to...
20 Replies

1433 Views

Last post by exxos
Thu Dec 27, 2018 3:39 pm
EAGLE CAD PCB EDITOR TUTORIAL PART 2

Last post by PaulJ « Fri Dec 21, 2018 11:42 pm
Replies: 7
by exxos » Thu Dec 20, 2018 4:11 pm

In part 1 we looked how to create a schematic. So next we need to create the PCB file.

We go into the FILE menu and click on SWITCH TO BOARD...

7 Replies

621 Views

Last post by PaulJ
Fri Dec 21, 2018 11:42 pm
EEVblog #1158 - How To Create PCB Mod Boards

Last post by exxos « Tue Dec 18, 2018 2:49 pm
Replies: 4
by exxos » Mon Dec 17, 2018 11:04 pm

Think we nailed that already :lol:

4 Replies

429 Views

Last post by exxos
Tue Dec 18, 2018 2:49 pm
Microscopic chip analysis

Last post by ijor « Tue Dec 11, 2018 4:31 pm
Replies: 8
by sandord » Tue Dec 11, 2018 12:59 am

I saw this tweet today:

The GDG is the Sharp MZ-800's equivalent of the ST's glue/mmu/shifter (don't know exactly the mixture)

I wondered if this...

8 Replies

536 Views

Last post by ijor
Tue Dec 11, 2018 4:31 pm
Lead-free soldering

Last post by PaulJ « Thu Dec 06, 2018 2:05 pm
Replies: 46
by sandord » Tue Oct 16, 2018 10:56 am
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Do you guys still solder using the old way or did you turn to lead-free soldering?

I'm doing the latter and I'm okay with it. Flow is a bit slower...
46 Replies

2317 Views

Last post by PaulJ
Thu Dec 06, 2018 2:05 pm
Teardown Tuesday - Pink monitor

Last post by exxos « Tue Dec 04, 2018 1:53 pm

by exxos » Tue Dec 04, 2018 1:53 pm

IMG_3649.JPG

So my pink monitor was having issues where the display was looking rather dim, and sometimes it would go through a span of...

0 Replies

274 Views

Last post by exxos
Tue Dec 04, 2018 1:53 pm
Logic Analyser on the Cheap

Last post by tzok « Sun Dec 02, 2018 4:29 pm
Replies: 16
by Icky » Sat Nov 10, 2018 10:47 pm
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I had noticed a few people on in this community using Logic Analysers (LA) to trace digital signals.

Not wanting to spend a lot of money on one such...
16 Replies

1062 Views

Last post by tzok
Sun Dec 02, 2018 4:29 pm
How custom PCBs are manufactured

Last post by sandord « Sun Nov 11, 2018 11:36 am
Replies: 1
by sandord » Sun Nov 11, 2018 11:28 am

I saw this interesting video (although the voice over is a little hard to understand) that explains how custom PCBs are manufactured. I have a...

1 Replies

243 Views

Last post by sandord
Sun Nov 11, 2018 11:36 am
How To Desolder Electronic Parts Using Different Tools.

Last post by pobolycwm « Mon Oct 29, 2018 12:48 pm
Replies: 1
by exxos » Tue Jan 09, 2018 9:37 pm

Interesting video on various de-soldering tools.

1 Replies

586 Views

Last post by pobolycwm
Mon Oct 29, 2018 12:48 pm
Capacitor Tutorial (Electrolytic, Tantalum, & Plastic Film)

Last post by exxos « Tue Oct 16, 2018 9:33 pm
Replies: 6
by exxos » Mon Oct 08, 2018 9:46 pm

Dave jones video - back in video #33... Very compact and informative video from 2009...

Dave mentions problems with ceramics, abiet rare,...

6 Replies

599 Views

Last post by exxos
Tue Oct 16, 2018 9:33 pm
Desolder braid

Last post by IngoQ « Fri Sep 28, 2018 11:04 am
Replies: 11
by Forgottenmyname » Thu Sep 27, 2018 8:27 pm
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Hi all,

Can someone please recommend a good but not too expensive solder braid. The cheap stuff I ordered from Amazon is literally that, cheap and...
11 Replies

846 Views

Last post by IngoQ
Fri Sep 28, 2018 11:04 am
My new USB microscope.

Last post by Axnfell « Mon Sep 10, 2018 1:52 pm
Replies: 12
by exxos » Sun Oct 29, 2017 10:43 pm
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Digital Andonstar Microscope.

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2 images I just took with a first fiddle..

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The PCB is 11mm x 16mm. SOT23-5 IC,...
12 Replies

2549 Views

Last post by Axnfell
Mon Sep 10, 2018 1:52 pm
Heatsink with integrated fan

Last post by mikro « Mon Aug 27, 2018 2:28 pm
Replies: 17
by mikro » Sun Aug 05, 2018 10:29 pm
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Hi guys,

have you ever seen a heatsink like this one: but smaller (say 40x40mm, ideally less). There's like a million of fans and coolers all over...
17 Replies

2102 Views

Last post by mikro
Mon Aug 27, 2018 2:28 pm
Capacitor voltage ratings

Last post by Neffers « Fri Jul 06, 2018 10:20 pm
Replies: 6
by exxos » Fri Jul 06, 2018 7:41 pm

I bought a stack of ceramic capacitors ages ago, surplus stuff. They were rated at 6.3V. Though I just hooked up one to my power supply and ran it at...

6 Replies

1029 Views

Last post by Neffers
Fri Jul 06, 2018 10:20 pm

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