Quiet buzzing sound from GT65 Monitor

[SkullBlade]

Hi, I'm a new Amstrad CPC464 owner.


A friend had an Amstrad CPC which was pretty much unused and he gave it to me.


The machine appears to work just fine, however I noticed a quiet buzzing sound coming from the monitor. Aside from this there are no issues with the machine as far as I can tell. I just want to know if it is normal for the monitor to make any sounds at all as I don't really want it do decide to blow on me and take my CPC464 with it.


If the monitor is dying, I think I will buy a PSU for the CPC and create a cable to connect it to my TV.

[Bryce]

The monitor should have a slight buzzing sound. If it's too loud or a very high pitch, then you should leave it turned off for a few days and the give the main PCB a good dusting with a paint brush and a can of pressurised air. Most of the buzzing is from semi-shortcircuits caused when the dust on the board has absorbed too much moisture from the atmosphere and is bridging components.
If it's still buzzing a lot after that (especially if it's high pitched), then the HT transformer is possibly ready to go, but you can safely use it till that happens. There's not a lot you can do to stop it, other than swap the transformer, and I doubt that's worth it.

Bryce.

[SkullBlade]

Okay, thanks for the advice.


The buzzing noise isn't very loud, so going by what you said I think it should be fine.


I was just wondering about it since the machine had been unused for so long, just wanted to be sure that it was fine.


Thanks.

[Bryce]

If you clean the PCB the buzzing should go down a bit, but I wouldn't worry about it, use the monitor while it still works.

Bryce.

[CanonMan]

The GT65 has a fairly hefty mains transormer in the back, and it could we be this that's buzzing. Making sure its mounting screws are tight wouldn't be a bad idea.

[SkullBlade]

Yeah, I cleaned out the monitor and it is a lot quieter now. Thanks for the help all