In this video we restore the A501 RAM expansion for our new Commodore Amiga 500. This card has some damage from a leaking battery so we fix the damage, replace the capacitors and install an alternative battery solution that should not leak in the future. We also discuss the mod done to the Amiga 500 that changes the expansion from providing pseudo-fast (slow) RAM to chip RAM accessible to the customer chips like Fat Agnus and Denise.


MENTIONED OR USED IN THIS VIDEO
Replacement PCB with original style header
https://www.pcbway.com/project/sharep...

Replacement Board with New Style Header in case yours is damaged
https://www.pcbway.com/project/sharep...

Fiberglass Scratch Pens and Refills
https://geni.us/RWRT_ScratchBrush
https://geni.us/RWRT_BrushRefill

Solder Mask
https://geni.us/RWRT_SolderMask

UV Light
https://geni.us/RWRT_UVLight

Alternative to the UV light
https://en.wikipedia.org/wiki/Sun

Weller Soldering Station
https://geni.us/Weller

Soldering Mat
https://geni.us/RWRT_SolderingMat

DeoxIT D5
https://geni.us/DeoxIT_D5

Open Source Scan Converter (OSSC) on eBay or Amazon
https://geni.us/RWRT_OSSC

Amiga RGB to Scart Cable at Amiga Kit
http://amigakit.amiga.store/scart-ami...

ABOUT THIS VIDEO
I am still waiting on the cap kit for the Amigas so I guess you do what you can do. I ordered the capacitors, along with a bunch of other goodies, a couple weeks ago from Retro Rewind but they seem to have been lost in the black hole that is the USPS in Chicago. At least the replacement socket for the Motorola 68000 is here!


TABLE OF CONTENTS
00:00 Introduction
01:20 RF Shield
02:00 Disassembly and inspection
02:40 Desoldering Battery
03:10 Removing Solder Mask from Damaged Areas
03:35 Ways to Protect Exposed Traces
04:24 Removing Capacitors
05:22 Installing New Caps
06:27 Replacing a Resistor
07:12 Applying UV Activated Solder Mask
08:50 Install CR2032 Coin Cell Holder
09:27 Install and Test with Chip Vs Fast RAM Discussion
10:45 Chip RAM Mod


ABOUT RAVENWOLF RETRO TECH

RavenWolf Retro Tech gives you new vintage tech videos regularly. We currently have about half a dozen videos in various states of completion, including Amiga 500 and Amiga 3000 restoration series’, part 2 of the Osbourne Executive Restoration (I know, its about time), a universal Commodore bench power supply, and a video on Commodore 64 and Amiga video output options and more!

Recent videos include a look at the mysterious VIC-42 chips that appeared on eBay, A look at our shop and all the vintage goodies waiting to be restored, an amazing streak of finds at local garage and estate sales, several videos in the Mac SE/30 restoration project and the start of restoration on a pair of Commodore Amigas.

At RavenWolf Retro Tech we restore and explore vintage technology from Back in the Day!

Now that we are moved into the new shop, the frequency of videos is increasing. I’ll keep putting out videos as I can, but I promise to focus on higher quality videos that don’t waste your time over frequent, low effort projects.

SEE FUTURE ITEMS TO BE RESTORED ON OUR WEBSITE
https://ravenwolffarm.com/future-rest...

MY FAVORITE TOOLS
https://www.ravenwolffarm.com/post/my...

ATTRIBUTION

Living Statues by Don McLeod
https://www.flickr.com/photos/livings...

FOLLOW ME
Twitter: @RavenWolfTech

SUBSCRIBE
   / @ravenwolfretrotech  


CHANNEL SUPPORT
Not necessary, but you can support the channel via item donations or PayPal.

Check the about tab for an email address for PayPal or to contact me regarding item donations.

Currently all support will go to tools and items for restoration.


AFFILIATE LINKS
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Copyright 2021, RavenWolf Productions

#RetroTech #Amiga #CommodoreAmiga