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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: mousehouse on November 02, 2009, 11:20:15 AM

Title: Lot of static noise on audio channel
Post by: mousehouse on November 02, 2009, 11:20:15 AM
My rusty old Amiga makes a lot of static noise on the "red" audiochannel. Sometimes it's completely silent, other times it is making a very loud crackling sound on top of the audio that is being played.

My guess is that one or more of the capacitors need replacing, is that a correct guess? If so, I haven't soldered anything in 15 years. Any volunteers or recommendations in NL?
Title: Re: Lot of static noise on audio channel
Post by: skurk on November 02, 2009, 11:45:27 AM
First amendment is to open the hood and check for faulty capacitors.  They should be fairly easy to replace, any electronics repair service should be able to do that (tv repair etc)
Title: Re: Lot of static noise on audio channel
Post by: tokyoracer on November 02, 2009, 12:29:26 PM
Totally agree on the cap replacement front, my Dad had the exact same problem with an old Hi-Fi amp (volume control though) and was fixed pretty easly and quickly. Good luck.
Title: Re: Lot of static noise on audio channel
Post by: Tumbleweed on November 02, 2009, 12:40:53 PM
leaky caps is a common fault. Have a look here:

http://joj.home.texas.net/amigacap.html

Anthony Hoffman - Castellen on A.Org can fix it.

http://amiga.serveftp.net/

Weed
Title: Re: Lot of static noise on audio channel
Post by: mousehouse on November 02, 2009, 02:16:08 PM
Thanks for the excellent resources!

Just swapped my Picasso II for a Picasso IV (a very nice card indeed), now the sound is perfect without static. But just to be safe I'm on the lookout for a good electronics guy, I also want the battery out and replaced by the nifty Li-Ion batteries I've seen in some pictures.
Title: Re: Lot of static noise on audio channel
Post by: rkauer on November 03, 2009, 05:44:01 AM
For a perfect replacement of the {censored} NiCd battery look for a VL2020 unit. It is the coin-type solder NiMH or Li-ion battery used in Blizzard 1260.