Broke A600 - no boot/black screen

[RetroNinja]

Hello,

Someone handed off an A600 for me to work on. He said he swapped video cables while everything was powered on, now there's no video.
The owner is a younger guy and mainly into the whole Octmed/DJ scene. He's an app user not an old fart worshiping old hardware (like me). I believe the A600 was a RetroPassion UK prepped machine
- it's PAL
- it has an A630 accelerator
- it has a PiggyBackNot v2 RGB2HDMI
- an internal gotek
- it has an IDE44 to CF card with WB3.1 license
- it has a 2.04 ROM

I've just started looking at the machine. There is no video on either the DB23 or the HDMI. I imagine either/both a Gary and Agnus are shot? My next step is to pull the ROM and replace with a DiagROM to see what's happening. On boot the gotek never accesses the drive. The gotek side it working fine - I can open folders/swap drives, it is more of the OS boot process never getting to the point of saying 'what's up?/gotta boot disk?'

Any ideas of things to check? Can I narrow down just Gary or Agnus with DiagROM?

 

[Boing-ball]

Hello,

Someone handed off an A600 for me to work on. He said he swapped video cables while everything was powered on, now there's no video.
The owner is a younger guy and mainly into the whole Octmed/DJ scene. He's an app user not an old fart worshiping old hardware (like me). I believe the A600 was a RetroPassion UK prepped machine
- it's PAL
- it has an A630 accelerator
- it has a PiggyBackNot v2 RGB2HDMI
- an internal gotek
- it has an IDE44 to CF card with WB3.1 license
- it has a 2.04 ROM

I've just started looking at the machine. There is no video on either the DB23 or the HDMI. I imagine either/both a Gary and Agnus are shot? My next step is to pull the ROM and replace with a DiagROM to see what's happening. On boot the gotek never accesses the drive. The gotek side it working fine - I can open folders/swap drives, it is more of the OS boot process never getting to the point of saying 'what's up?/gotta boot disk?'

Any ideas of things to check? Can I narrow down just Gary or Agnus with DiagROM?

Maybe of some help:

A600 faulty video - English Amiga Board

A600 faulty video support.Hardware

eab.abime.net

I believe the Denise or Super Denise chip controls video on the A600

 

[RetroNinja]

Thanks for the lead. I'm too use to A2000(s) where it seems every video problem is related to an Agnus.

 

[Boing-ball]

Thanks for the lead. I'm too use to A2000(s) where it seems every video problem is related to an Agnus.

Welcome.

Wait until you get to troubleshoot AGA systems like the A1200 and A4000 Then it’s the Lisa and Alice chips for graphics.