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Title: CPC 6128 Sound Issue
Post by: n00b on 20:54, 27 April 16

Hi there,

I have a problem with my CPC 6128.

There is almost no sound hearable - respectively only if I push the cursor up button some "fragments" can be heard. Could it be that the sound chip is faulty (because it is someway connected to the keyboard)?

Regards

Title: Re: CPC 6128 Sound Issue
Post by: TFM on 22:50, 27 April 16

Try to ....

- Clean the Volume wheel at the back of the computer

- Try to hear something with a 3.5mm stereo jack (same earphone you use in planes)

- Good luck!

Title: Re: CPC 6128 Sound Issue
Post by: khaz on 01:39, 28 April 16

Quote from: TFM on 22:50, 27 April 16- Try to hear something with a 3.5mm stereo jack (same earphone you use in planes)

Same earphones you use in everything, really :D It's probably the most ubiquitous plug there is, and you chose the plane example haha

There was another person here who had a very similar problem to yours. After more thorough testing, it seems their AY chip died. I hope it's not the case with yours.
CPC 6128 sound problems (http://www.cpcwiki.eu/forum/hardware-related/cpc-6128-sound-problems/)

Title: Re: CPC 6128 Sound Issue
Post by: Audronic on 08:24, 28 April 16

@n00b (http://www.cpcwiki.eu/forum/index.php?action=profile;u=1236)

If you replace the AY-3-8912 Please make sure That it is an AY-3-8912 and NOT an AY-3-8912A

Good Luck Ray

Title: Re: CPC 6128 Sound Issue
Post by: Bryce on 08:25, 28 April 16

The headphone test will tell you whether it's the AY or something else, as it's an almost direct connection to the AY (no amplifier or volume control in between).

Bryce.

P.s. Plane headphones are one of the only headphones that DON'T use the standard 3.5mm stereo jack. Most of them still use the 2x mono 3.5mm jack.

Title: Re: CPC 6128 Sound Issue
Post by: n00b on 08:53, 28 April 16

The headphone test comes to the same result (I have a SCART cable with a built-in headphone cable). So it is the AY?

Can I order a new one from ebay (something like that: 1PCS Programmable Sound Generator IC SOUND/GI DIP-28 AY-3-8912 AY3-8912 | eBay (http://www.ebay.de/itm/1PCS-Programmable-Sound-Generator-IC-SOUND-GI-DIP-28-AY-3-8912-AY3-8912-/401024954403?hash=item5d5ef33023:g:SlEAAOSw9mFWMca~))?

Title: Re: CPC 6128 Sound Issue
Post by: SRS on 10:30, 28 April 16

Hi n00b, der sieht passend aus. Und ist ganz schön preiswert.

Ups . English forum - yes, looks like it would fit.

Title: Re: CPC 6128 Sound Issue
Post by: Bryce on 10:44, 28 April 16

Then it's definitely the AY. Yes, that's the correct part. Make sure you socket it too.

Bryce.

Title: Re: CPC 6128 Sound Issue
Post by: n00b on 10:53, 30 April 16

Yes. it was the AY.

THX again for your fast help! ;)

Title: Re: CPC 6128 Sound Issue
Post by: minwah on 15:14, 01 May 16

I have a CPC with the exact same problem. I was fiddling around with the joystick port back in the day (making a 'virtual glove') which caused it.

I used to put a weight on the up arrow as it made the sound ok. Not 100% right but almost.

Title: Re: CPC 6128 Sound Issue
Post by: n00b on 17:06, 01 May 16

And why don't you fix it correctly? :P

Title: Re: CPC 6128 Sound Issue
Post by: minwah on 12:46, 04 May 16

Quote from: n00b on 17:06, 01 May 16
And why don't you fix it correctly? :P

Well...now I know almost certainly what the solution is, I probably will!

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General Category => Technical Support - General => Topic started by: n00b on 20:54, 27 April 16