PC archeology: Upgrading the Compaq Presario 425 All-In-One (Part 2)

In this video I delve into upgrading the Presario 425 to give the all-in-one the speed boost and RAM upgrade it deserves. It is now a wonderful little 486 gaming machine!

Part 1: https://youtu.be/WfBRfp9IRlM
Part 2: This part

0:00 Intro
1:11 Upgrade plans for the Compaq
3:15 Jumper settings for the Presario 425
5:07 Copying files off the original hard drive
9:57 Testing a CF card in the Compaq
13:39 Benchmarking the machine before upgrades
15:03 My plans to improve the speed
16:07 How to route ribbon cables through tight spaces
17:49 CPU upgrade
21:15 RAM upgrade
25:05 Heat sink on the CPU
27:48 Installing a SB16
29:17 Testing and benchmarking
39:55 Scratched CRT
40:42 Outro

Cirrus Logic CL5420
Compaq Presario 425
Tabworks from XSoft

-- Video Links

Adrian's Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g

Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement

Compaq Presario 425:
https://www.atarimagazines.com/compute/issue167/99_Compaq_Presario_425.php

Turrican II:
https://www.myabandonware.com/game/turrican-ii-the-final-fight-11p

Second Reality by Future Crew:
https://www.youtube.com/watch?v=rFv7mHTf0nA

Intel 80486DX2:
https://en.wikipedia.org/wiki/Intel_80486DX2

Intel 487SX:
https://en.wikipedia.org/wiki/X87#80487

-- Tools

Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f

O-Ring Pick Set: (I use these to lift chips off boards)
https://amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
https://amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
https://amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
https://www.rigolna.com/products/digital-oscilloscopes/1000z/

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
https://amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
https://amzn.to/2wG4tlP
https://www.aliexpress.com/item/33000308958.html

TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853

EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/

DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672

Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.ebay.com/itm/14-16-18-20-24-28-32-40-pin-IC-Test-Universal-ZIF-Socket-Fs/303206721971

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
http://www.retrotink.com/

Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184

Heat Sinks:
https://www.aliexpress.com/item/32537183709.html

Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI

--- Links

My GitHub repository:
https://github.com/misterblack1?tab=repositories

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/

--- Instructional videos

My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino