Factory headunit broken after removing to check what kind of pins it has?!

Hey guys;

Just like the title says. Planning on getting an aftermarket deck, so I pulled my factory headunit (CD53?) to see whether it had the flat or round pins.
When I next ran the car, I couldn't get anything out of the radio:

• No clock, or anything else on the display
• No audio
• No anti-theft light

The only indication that I even plugged the connector back in is that I can see the faceplate light up when my headlights are on.
I tried pulling it again, checked the connector and the built-in fuse above it, and everything looks good...

Any ideas? Was it just that I forgot to unhook the battery before pulling it the first time?
Happy to pull it again if part numbers or photos help.


Also, possibly related is the fact that I removed my glove compartment to test out of my fuel pump relay, and removed the GM5 to get a better reach. However, central locking and fuel are working fine afterwards; the car is in complete running order except for the damn radio.
Is there even anything in that area that I could have forgotten which would make it stop working? I wouldn't know.

Nobody has any ideas at all?

fuse blown maybe?

radio conector no plug in all the way?

Follow a simple diag tree here

1. check all fuses
2. remove radio & make sure pins on the back of the radio are not bent/ damaged
3. make sure wiring connector is/ was fully seated & clipped into place

Yup, turned out to be a mis-positioned fuse in the main box.
Thanks All!