A500 No Sound

Badders · 24 September 2006, 17:48

Just tested an A500 I got from Ebay. Now, the price was excellent so not fussed about refund etc.

I set it up using my 1084s monitor and the audio cables. Problem: there is no sound. Well, not entirely true, if I turn the volume to max, there is something there.

Now, I know the monitor, cables and game are fine as I use these with my A1200.

Is the Paula chip and easy replacement job? Could there be another problem? Graphics etc. all seem to be working fine and I was able to play the game.

Hope someone can help.

Badders.

boing_1000 · 24 September 2006, 17:52

So you're connecting the 500's audio up to the monitor? Or through separate speakers?

Badders · 24 September 2006, 18:10

To the monitor. I had my 1200 connected and was writing ADFs to floppies. I then disconnected the 1200 and connected the 500. Nothing was removed from the monitor end.

I just plugged in the L and R audio cables into the necessary outputs on the 500. I even tried the mono output and got loud crackling. This made me assume the sound chip was faulty / dying / dead.

boing_1000 · 24 September 2006, 18:28

Maybe the sound chip in your 500 is loose? I'm not sure what else it could be. If it's not loose, then perhaps it's on its last leg. If you don't mind spending the extra money to get it fixed and being parted with it for a while, I would recommend the repair center in France or the guys at this website:

http://www.retrogeekcomputers.com/repair.htm

Since they specialize in fixing the Amiga 500, they may be just what you need.

Badders · 24 September 2006, 18:41

Thanks I'll check them out.

I'm also watching another one on Ebay, only £5 at the moment. Could be handy for spares.

Badders.

Badders · 24 September 2006, 19:34

Well, I've opened her up and all the chips are securely in place. I've cleaned out a load of dust, and checked for sign of anything having blown. It looks fine.

First time it's been opened too, the warranty stickers were still in place.

Will try again shortly, maybe opening it and pressing the chips / cleaning the dust fixed it. You never know.

Badders.

Jope · 24 September 2006, 22:01

Check -12v on your power supply.

boing_1000 · 24 September 2006, 22:16

Good luck. God knows how frustrating it was for me to get my 1200 completely up and running. Now she's doing quite well. Have faith haha.

Badders · 24 September 2006, 22:33

Hi,

I was using the exact same power supply on the 1200 5 mins before I set the 500 up, and again afterwards.

Thanks for the suggestion.

Badders · 24 September 2006, 22:35

Tried again after the cleanup. Still the same. It is producing sound, with the monitor turned up max, it can be heard.

Does the A500 require amplification if using the phono outputs?? Sound like a silly question really.

Badders.

alexh · 24 September 2006, 23:40

There is an amplifier in the 1084S (which I assume you have tested?).

Badders · 25 September 2006, 01:32

Yeah, works fine with my 1200 and C64.

alexh · 25 September 2006, 09:05

All I can think of is the DACS have a reference voltage, perhaps this is screwed?

Jimbo · 25 September 2006, 12:38

Quote:

Originally Posted by Badders

Just tested an A500 I got from Ebay. Now, the price was excellent so not fussed about refund etc.

I set it up using my 1084s monitor and the audio cables. Problem: there is no sound. Well, not entirely true, if I turn the volume to max, there is something there.

Now, I know the monitor, cables and game are fine as I use these with my A1200.

Is the Paula chip and easy replacement job? Could there be another problem? Graphics etc. all seem to be working fine and I was able to play the game.

Hope someone can help.

Badders.

Yes you outbid me for that one

I got home to late to bid on it.

Badders · 25 September 2006, 17:13

I do apologise

. Saved you some sound problems though

Overdoc · 25 September 2006, 22:05

Possible problem could be a missing 12V (maybe bad or worn out solderpoint on the psu connector from plugging in/off too many times), some dead filter capacitor, or a partly damage Paula chip, which I don't think. I think it is the missing 12V or capacitor.
You can try looking at the A-500 schematics to repair the problem.

Badders · 26 September 2006, 18:46

I picked up a 2nd A500 on Ebay for £20. This one is advertised and fully working. If ok, I'll use the duff sound one for spares.

I'll also check out schematics and see if the problem can be found / fixed. Can't hurt to have 3 working Amiga

Zetr0 · 27 September 2006, 02:38

rather than Amiga, would it not be Amigi? *hehe*

24 September 2006, 17:48	#1
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	A500 No Sound Just tested an A500 I got from Ebay. Now, the price was excellent so not fussed about refund etc. I set it up using my 1084s monitor and the audio cables. Problem: there is no sound. Well, not entirely true, if I turn the volume to max, there is something there. Now, I know the monitor, cables and game are fine as I use these with my A1200. Is the Paula chip and easy replacement job? Could there be another problem? Graphics etc. all seem to be working fine and I was able to play the game. Hope someone can help. Badders.

24 September 2006, 18:28	#4
boing_1000 A1000 Addict Join Date: Jan 2006 Location: Eastern USA Age: 37 Posts: 567	http://www.retrogeekcomputers.com/repair.htm Maybe the sound chip in your 500 is loose? I'm not sure what else it could be. If it's not loose, then perhaps it's on its last leg. If you don't mind spending the extra money to get it fixed and being parted with it for a while, I would recommend the repair center in France or the guys at this website: http://www.retrogeekcomputers.com/repair.htm Since they specialize in fixing the Amiga 500, they may be just what you need.

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24 September 2006, 17:52	#2
boing_1000 A1000 Addict Join Date: Jan 2006 Location: Eastern USA Age: 37 Posts: 567	So you're connecting the 500's audio up to the monitor? Or through separate speakers?

24 September 2006, 18:10	#3
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	To the monitor. I had my 1200 connected and was writing ADFs to floppies. I then disconnected the 1200 and connected the 500. Nothing was removed from the monitor end. I just plugged in the L and R audio cables into the necessary outputs on the 500. I even tried the mono output and got loud crackling. This made me assume the sound chip was faulty / dying / dead.

24 September 2006, 18:41	#5
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	Thanks I'll check them out. I'm also watching another one on Ebay, only £5 at the moment. Could be handy for spares. Badders.

24 September 2006, 19:34	#6
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	Well, I've opened her up and all the chips are securely in place. I've cleaned out a load of dust, and checked for sign of anything having blown. It looks fine. First time it's been opened too, the warranty stickers were still in place. Will try again shortly, maybe opening it and pressing the chips / cleaning the dust fixed it. You never know. Badders.

24 September 2006, 22:01	#7
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Check -12v on your power supply.

24 September 2006, 22:16	#8
boing_1000 A1000 Addict Join Date: Jan 2006 Location: Eastern USA Age: 37 Posts: 567	Good luck. God knows how frustrating it was for me to get my 1200 completely up and running. Now she's doing quite well. Have faith haha.

24 September 2006, 22:33	#9
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	Hi, I was using the exact same power supply on the 1200 5 mins before I set the 500 up, and again afterwards. Thanks for the suggestion.

24 September 2006, 22:35	#10
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	Tried again after the cleanup. Still the same. It is producing sound, with the monitor turned up max, it can be heard. Does the A500 require amplification if using the phono outputs?? Sound like a silly question really. Badders.

24 September 2006, 23:40	#11
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	There is an amplifier in the 1084S (which I assume you have tested?).

25 September 2006, 01:32	#12
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	Yeah, works fine with my 1200 and C64.

25 September 2006, 09:05	#13
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	All I can think of is the DACS have a reference voltage, perhaps this is screwed?

25 September 2006, 17:13	#15
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	I do apologise . Saved you some sound problems though

25 September 2006, 22:05	#16
Overdoc Commodore Collector Join Date: Aug 2001 Location: Austria Age: 53 Posts: 944	Possible problem could be a missing 12V (maybe bad or worn out solderpoint on the psu connector from plugging in/off too many times), some dead filter capacitor, or a partly damage Paula chip, which I don't think. I think it is the missing 12V or capacitor. You can try looking at the A-500 schematics to repair the problem.

26 September 2006, 18:46	#17
Badders Commodore Nut Join Date: Aug 2006 Location: Durham / UK Age: 51 Posts: 75	I picked up a 2nd A500 on Ebay for £20. This one is advertised and fully working. If ok, I'll use the duff sound one for spares. I'll also check out schematics and see if the problem can be found / fixed. Can't hurt to have 3 working Amiga

27 September 2006, 02:38	#18
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	rather than Amiga, would it not be Amigi? hehe

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