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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Giana on October 11, 2017, 08:51:20 PM

Title: A600 faulty power supply ?
Post by: Giana on October 11, 2017, 08:51:20 PM
Dear all,

One of my A600 stopped working.
It does not boot anymore and only the caps led remains green.

I decided, first to check the PSU voltages.
Here are the figures :
-10,2v instead of -12v
5,1v instead of 5v
11,3v instead of 12v

Do you think the PSU could be faulty or the figures above are within the normal variation ?
When switching off, the PSU does a little air sound : "pfffffiiiiit".

Now about the A600. I think about a recap. Do you think, according the caps led, capacitors could be the faulty items ?
Can't do the recap myself since I do not have enough experience with soldering tiny components on pcb, I'll have to find an Amiga repairman : someone to recommend ?

Many thanks for your advices.

Giana
Title: Re: A600 faulty power supply ?
Post by: kirk_m on October 11, 2017, 10:08:13 PM
Giana,

Where are you located?  This will help others recommend competent repair people closest to you.

Quote from: Giana;831646
Dear all,

One of my A600 stopped working.
It does not boot anymore and only the caps led remains green.

I decided, first to check the PSU voltages.
Here are the figures :
-10,2v instead of -12v
5,1v instead of 5v
11,3v instead of 12v

Do you think the PSU could be faulty or the figures above are within the normal variation ?
When switching off, the PSU does a little air sound : "pfffffiiiiit".

Now about the A600. I think about a recap. Do you think, according the caps led, capacitors could be the faulty items ?
Can't do the recap myself since I do not have enough experience with soldering tiny components on pcb, I'll have to find an Amiga repairman : someone to recommend ?

Many thanks for your advices.

Giana
Title: Re: A600 faulty power supply ?
Post by: Oldsmobile_Mike on October 11, 2017, 10:30:18 PM
When you say "one of your A600 stopped working".  This implies that you have multiple A600's.  The obvious question here would be, have you tested it with a different power supply?  If you suspect the problem is caused by a faulty power supply I would swap with a different one as a test before thinking about recapping.  Good luck!  :)
Title: Re: A600 faulty power supply ?
Post by: giZmo350 on October 11, 2017, 10:57:22 PM
Or, test the suspected faulty power supply with one of your other A600's! :p

Quote from: kirk_m;831650
Giana, Where are you located?

His avatar info states he's in Switzerland.

@Giana

Some suggestions for repair near Switzerland...
http://eab.abime.net/showthread.php?t=81395&highlight=repair

Say, Hej! to Anni-Frid Synni Lyngstad, Prinzessin Reuß von Plauen for me! :)
Title: Re: A600 faulty power supply ?
Post by: Giana on October 12, 2017, 08:33:39 AM
Hi,
I'm in Switzerland, near Lausanne.
Giana
Title: Re: A600 faulty power supply ?
Post by: Giana on October 12, 2017, 08:35:11 AM
Hey,
I just have one PSU since I use one A600 at a time.
I know, it's stupid, I should source at least another A600 PSU ....
Title: Re: A600 faulty power supply ?
Post by: TCMSLP on October 12, 2017, 09:34:23 AM
Quote from: Giana;831646

I decided, first to check the PSU voltages.
Here are the figures :
-10,2v instead of -12v
5,1v instead of 5v
11,3v instead of 12v


5v is the important one, the others being mostly optional ;)

Do you get any video output?  Black screen?

I suspect it may be capacitor issue which is holding reset low (high?).   If it's not already been re-capped then it's long overdue (same for your other A600s).


Steve
Title: Re: A600 faulty power supply ?
Post by: kirk_m on October 12, 2017, 03:22:04 PM
Quote from: gizmo350;831653

His avatar info states he's in Switzerland.


[/QUOTE


His location information was not present under the avatar when I replied, hence my reply.
Title: Re: A600 faulty power supply ?
Post by: giZmo350 on October 12, 2017, 03:33:59 PM
Quote from: kirk_m;831683
His location information was not present under the avatar when I replied, hence my reply.

Ahhhhhhhhh........ :cool:

His location info was present under the avatar when I replied, Hence my replied reply. :lol:
Title: Re: A600 faulty power supply ?
Post by: scuzzb494 on October 14, 2017, 12:41:44 AM
Quote from: Giana;831646
Dear all,

One of my A600 stopped working.
It does not boot anymore and only the caps led remains green.

I decided, first to check the PSU voltages.
Here are the figures :
-10,2v instead of -12v
5,1v instead of 5v
11,3v instead of 12v

Do you think the PSU could be faulty or the figures above are within the normal variation ?
When switching off, the PSU does a little air sound : "pfffffiiiiit".

Now about the A600. I think about a recap. Do you think, according the caps led, capacitors could be the faulty items ?
Can't do the recap myself since I do not have enough experience with soldering tiny components on pcb, I'll have to find an Amiga repairman : someone to recommend ?

Many thanks for your advices.

Giana


Three goes the charm !!  Each morning.. switch on A600 and nothing. So I do the old Ctrl-Left Amiga-Right Amiga and ... nothing... Third time is the charm and always works so a  Ctrl-Left Amiga and Right Amiga and like magic she always works. Or you could try talking to her nicely. That has worked also for me.

I have like 100 Amigas and not one is capped. They just work.

Like this one today.....

http://www.scuzzscink.com/amiga/scuzzblog_october17/scuzzblogdoctober17_1301.htm

If I were you I would get another power supply.
Title: Re: A600 faulty power supply ?
Post by: Oldsmobile_Mike on October 14, 2017, 06:07:35 AM
Quote from: scuzzb494;831728
I have like 100 Amigas and not one is capped. They just work.

Until they don't.

And you open them up and find the caps have eaten through your motherboard.

Oh well, I guess if one goes, you still have 99 others to play around with. :lol: