Re: CBM 3032 (PET 2001N-32), no video?

From: And Fachat <afachat_at_gmx.de>
Date: Sun, 25 Feb 2018 08:45:06 +0100
Message-ID: <161cbec23d0.27e0.b4d1f2b66006003a6acd9b1a7b71c3b1@gmx.de>
Am 25. Februar 2018 00:25:24 schrieb Mia Magnusson <mia@plea.se>:


> I'd check the signals from the main logic board up to the monitor. An
> oscilloscope is ideal but a simple volt meter could be usable. If you
> don't have anything to measure with you could use a series resistor and
> the input of some crap audio amplifier/speaker setup. You should hear a
> rattling sound on VSYNC and with really good ears might hear something
> on HSYNC but probably not. Video out should give a rattling sound if
> there is something on screen.

Attaching a speaker is a cool idea!

I would have suggested using a small logic board on the user port (that has 
the video signals) to create a composite signal and attach a standard monitor.

But the drawback is that you don't know if your composite logic and monitor 
setup work if you haven't tried it before on a working pet

André



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