IZ8DWF gets mail! MOS8701 replacement and key test fixture from Hey Birt! @iz8dwf

iz8dwf | IZ8DWF gets mail! MOS8701 replacement and key test fixture from Hey Birt! @iz8dwf | Uploaded November 2020 | Updated October 2024, 2 hours ago.
The friendly Jeff Birt sent some presents! Good stuff for repairing and testing Commodore machines!

Hey Birt! youtube channel:
youtube.com/channel/UC2V0T-vGOewtuCW3pazzczQ

Design and Engineering of 8701 Replacement video:
youtube.com/watch?v=e5o8c656j3Q

Rejuvenating vintage keyboard contacts video:
youtube.com/watch?v=n9gGz2n-sBU&t=1074s

Quick repair of a Commodore 64 with a PLA fault

Apple IIgs disk interface issue. Substituting the IWM with a Macintosh one.

The longest Commodore PET 4032 repair ever, pt.1

Apple II europlus restoration and repair.

2 x C64 repair. One easy black screen case and a wrong approach

Commodore PET 2001 repair: dealing with MOS 6550/6540.

Making a vector monitor Pt. 4: Deflection yoke and driver issues.

Commodore PET 8032-SK repair. Making a new old school troubleshooting tool.

Gallag arcade (Galaga bootleg) #2 : Reverse engineering

$Yaesu FT-817 hamradio transceiver repair. Fuse and fused trace. This Yaesu FT-817 (S/N 21540153) wouldnt power on. The problem was due to a blown battery fuse and an interrupted trace on the 13V unswitched supply going to the Panel PCB. Yaesu FT-817 service manual: https://www.fracassi.net/iw2ntf/manuali/FT817_serv.pdf Timeline: 00:00 - Welcome 00:37 - Opening it and inspection 01:32 - Battery fuse 02:38 - The green wire ghost 06:38 - Bad capacitors 08:32 - Broken trace 10:44 - Testing buttons 12:00 - A 6m QSO$

Dead Commodore 16. Making a MOS7501/8501 replacement adapter with a 6502. Part 1.