r/Commodore • u/VroomSteam • 11d ago

Commodore plus 4 fuzz bar

Post image

It's not very noticeable on this screen, but when some games it's very noticeable. It's a fuzzy bar that rolls upwards slowly looping around.

Is this common on +4 computers? Is it noise from the environment?

2 Upvotes

67% Upvoted

9 comments sorted by

2

u/Sirotaca 11d ago

I'm not that familiar with the Plus 4, but that's generally a sign of inadequate power filtering.

1

u/Alarming_Cap4777 11d ago

What power supply are you using?

1

u/VroomSteam 11d ago

The original 

1

u/AJD_1975 10d ago

Have you tested it? It’s hard to fine a replacement, I got mine from a seller from Poland

1

u/Alarming_Cap4777 10d ago

You can use a c64 PSU and an adapter from American retro. https://ebay.io/m/I9qTdo

0

u/AJD_1975 10d ago

Good idea. I have a C64U so that wouldn’t work for me

2

u/Alarming_Cap4777 10d ago

The topic was commodore plus 4 with a comment that the PSU was hard to find. So he can by a new c64 PSU and this adaptor.

1

u/Ready_Rain_2646 10d ago

It's 100% the psu.

Tip: plus4 doesn't need 9v ac except user port and cassette port. So you can just build a simple adapter by removing some pins of a DIN7 plug and connecting it to a USB power source.