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Offline dougalTopic starter

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A600 sound problem
« on: October 30, 2011, 03:19:56 PM »
The sound when connected to RF was fine but through the phonos it does not sound right as in the volume is low and only 1 channel is working but both phonos are working but both are outputting the same i.e no stereo which means half the sound is missing.

What could the problem be?

Phono cable is good as its the same one i use on the A1200
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD
A4000 040 @33Mhz -Kick 3.1 / 16MB
A2000 Rev4.4 - \'030 @25Mhz / 8MB / Kick 3.1 / ClassicWB
CD32 -     Stock (W/ 2 CD32 Controllers]
A500 Plus - 68000 / 2MB Chip / 2Mb Fast / 2.04/1.3 / A590 / A570
A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1
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Offline spaceman88

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Re: A600 sound problem
« Reply #1 on: October 30, 2011, 03:50:13 PM »
Quote from: dougal;665815
The sound when connected to RF was fine but through the phonos it does not sound right as in the volume is low and only 1 channel is working but both phonos are working but both are outputting the same i.e no stereo which means half the sound is missing.

What could the problem be?

Phono cable is good as its the same one i use on the A1200


Probably capacitors. I don't have a schematic for a 600 but there are likely a half dozen or so in the audio circuit.
 

Offline dougalTopic starter

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Re: A600 sound problem
« Reply #2 on: October 30, 2011, 03:53:15 PM »
Quote from: spaceman88;665818
Probably capacitors. I don't have a schematic for a 600 but there are likely a half dozen or so in the audio circuit.


Are they easy to replace?
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD
A4000 040 @33Mhz -Kick 3.1 / 16MB
A2000 Rev4.4 - \'030 @25Mhz / 8MB / Kick 3.1 / ClassicWB
CD32 -     Stock (W/ 2 CD32 Controllers]
A500 Plus - 68000 / 2MB Chip / 2Mb Fast / 2.04/1.3 / A590 / A570
A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1
CDTV

PowerMac G4 1Ghz (MorphOS / Leopard)

[url]http://amigamap.com/us
 

Offline Cammy

Re: A600 sound problem
« Reply #3 on: October 31, 2011, 01:46:07 AM »
Yeah, that definitely sounds like capacitors, it happens to all the A600s and A1200s, same symptoms every time, crackling audio, audio only in one channel or low volume.

I can't solder so can't replace capacitors myself, but it's a job many handy Amiga guys have done themselves, if not a TV repairman could do it for you. You would be best to replace all of the capacitors at once, not just the ones that are failing at the moment.
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Offline dougalTopic starter

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Re: A600 sound problem
« Reply #4 on: October 31, 2011, 05:51:04 PM »
Guys i think i effed it up :(

I was removing caps and stuff and re-soldering and it was fine except for sound. But even with a lot of caps removed it still booted.

Now it wont. When i switch it on the disk drive clicks ones, the screen goes fist black and then 3 shades of grey as normal and it just gets stuck there on a grey screen with no boot and the hard drive wont switch on.

Any ideas?
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD
A4000 040 @33Mhz -Kick 3.1 / 16MB
A2000 Rev4.4 - \'030 @25Mhz / 8MB / Kick 3.1 / ClassicWB
CD32 -     Stock (W/ 2 CD32 Controllers]
A500 Plus - 68000 / 2MB Chip / 2Mb Fast / 2.04/1.3 / A590 / A570
A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1
CDTV

PowerMac G4 1Ghz (MorphOS / Leopard)

[url]http://amigamap.com/us
 

Offline tone007

Re: A600 sound problem
« Reply #5 on: October 31, 2011, 06:24:44 PM »
Aderp?  Why try to boot it with the caps removed?
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Offline dougalTopic starter

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Re: A600 sound problem
« Reply #6 on: October 31, 2011, 06:47:05 PM »
First i tried with the new caps, then when it wouldnt boot i tried removing them and it worked, so i re-soldered some of them again and then wouldnt boot. Thats when i tried removing some and tried booting without.
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD
A4000 040 @33Mhz -Kick 3.1 / 16MB
A2000 Rev4.4 - \'030 @25Mhz / 8MB / Kick 3.1 / ClassicWB
CD32 -     Stock (W/ 2 CD32 Controllers]
A500 Plus - 68000 / 2MB Chip / 2Mb Fast / 2.04/1.3 / A590 / A570
A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1
CDTV

PowerMac G4 1Ghz (MorphOS / Leopard)

[url]http://amigamap.com/us
 

Offline DrDekker

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Re: A600 sound problem
« Reply #7 on: November 01, 2011, 12:44:51 PM »
Perhaps some of the caps were replaced with the polarities reversed?
A1200, M-Tec 1230 @28MHz, FPU, MMU, 8Mb fast ram, SCSI card, 512Mb HD, Power CDROM drive, PS2 optical mouse