BeoLab 8000: replacing filer capacitors > which replacements are recommended?

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KolfMAKER Posted: Fri, Jun 25 2021 4:10 PM

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I need to replace the filter capacitors in my BeoLab 8000.

These are C9 & C10 on PCB2/Power Supply.
Their values are: 4700uF, -20+50%, 63v.

I have had the recommendation to keep the same value, but only use a bit higher voltage than the original.

By the way, I need to replace them in a BeoLab 8000 with these serial numbers:

• 1342xxxx
• 0942xxx (older)

Question:

1. Which type/brand of capacitor is recommended to use as replacement?
2. Is there any difference in filter capacitor between these two serial numbers?
3. Suggestion for a webshop is appreciated.

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Dante replied on Sat, Jun 26 2021 3:07 AM

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https://www.newark.com/cornell-dubilier/381ll472m063a032/cap-4700uf-63v-alu-elec-snap-in/dp/54AH2153

The original capacitors are 85 or 105 oC rated?

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Dillen replied on Sat, Jun 26 2021 7:38 AM

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KolfMAKER:

I need to replace the filter capacitors in my BeoLab 8000.

May I ask why you need to replace them?

Martin

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KolfMAKER replied on Sat, Jun 26 2021 11:03 AM

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Thnx Dante.
The originals are 105 oC. 

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KolfMAKER replied on Sat, Jun 26 2021 11:06 AM

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Thnx Martin.

I have two with hum and hiss. Had an extensive search for the source of this problem.
Next week I get help with measuring through the electronic circuits. But the suspect looks to be these two capacitors.
Since I am a bit in a hurry finishing my projects with these BeoLabs, I already prepare the next step if needed. In this
case finding a good source for the right replacement material. 

So your suggestions are welcome.