a500 PSU caps

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maeltar
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Joined: Sat Jun 15, 2019 7:47 am

Re: a500 PSU caps

Post by maeltar »

terriblefire wrote: Mon Aug 17, 2020 10:21 am Opened up mine..

Mains side the main smoothing cap is a 400V 33uF

The one thats gone fishy is a 10V 1000uF cap.
Here's the other side ( DC low )..
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terriblefire
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Re: a500 PSU caps

Post by terriblefire »

Steve wrote: Mon Aug 17, 2020 11:15 am I would recommend just replacing the entire board with a Meanwell PSU. Just jump on YouTube and type 'meanwell amiga' and you'll see lots of guides. (I did this myself, they're really great)
I'm not a fan of the chineseium caps they use in those.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
maeltar
Posts: 14
Joined: Sat Jun 15, 2019 7:47 am

Re: a500 PSU caps

Post by maeltar »

Steve wrote: Mon Aug 17, 2020 11:15 am I would recommend just replacing the entire board with a Meanwell PSU. Just jump on YouTube and type 'meanwell amiga' and you'll see lots of guides. (I did this myself, they're really great)
Done that on someone elses and was a nice easy mod, but wanting to get this working so can pass on the whole thing..
maeltar
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Re: a500 PSU caps

Post by maeltar »

All ordered, had to order 2200uF 50v instead of 40v, but should be fine..

the princely sum of £11.00 from Farnell ....

Could be another Amiga Power supply rising from the dead !
Steve
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Re: a500 PSU caps

Post by Steve »

I must have been lucky cause mine had Nichicon inside, unless they were fakes :)
maeltar
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Re: a500 PSU caps

Post by maeltar »

They arrived and installed them this morning, it's alive ( and no fishy smell )..

And the Amiga that I got with it, ( seals intact ) seems to work, but I don't have the wire for the 520 😔 so unsure about video, but the lights work and the drive does the appropriate clicky seeking type noise... Very Happy

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DrF
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Re: a500 PSU caps

Post by DrF »

maeltar wrote: Thu Aug 20, 2020 8:58 am but I don't have the wire for the 520 😔 so unsure about video, but the lights work and the drive does the appropriate clicky seeking type noise... Very Happy
For a test could you not use the mono composite video out instead?
Just remembered the A520 does colour composite out too, might be a option with modern TVs, I guess RF is no more :(
Hated them A520 modulators they always seemed to blow up on me :lol:
maeltar
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Re: a500 PSU caps

Post by maeltar »

DrF wrote: Thu Aug 20, 2020 10:15 am

For a test could you not use the mono composite video out instead?
Just remembered the A520 does colour composite out too, might be a option with modern TVs, I guess RF is no more :(
Hated them A520 modulators they always seemed to blow up on me :lol:
Good call sir !!!!

Will give that a go later and see what happens..
maeltar
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Re: a500 PSU caps

Post by maeltar »

DrF wrote: Thu Aug 20, 2020 10:15 am For a test could you not use the mono composite video out instead?
Just remembered the A520 does colour composite out too, might be a option with modern TVs, I guess RF is no more :(
Hated them A520 modulators they always seemed to blow up on me :lol:
TaDaaaa Very happy, it's alive :)

Now to try and source WB disks etc..
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DrF
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Re: a500 PSU caps

Post by DrF »

Now that's awesome, looks shockingly clear too :D
My A500+ mono out looked like crap, whoever's idea that was adding that well.... :lol:
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