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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022

 

Beocenter 7002 Trimmers

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This post has 12 Replies | 1 Follower

John
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John Posted: Fri, Apr 13 2012 8:38 PM

My Beocenter 7002 needs the 2 "Idle current Trimmers" changing, Seems a common fault on many of the beo amps. Should I change them for the same skeleton trimmers or are better replacements available?   

  Thanks, John. 

Also thank you Martin for all your help in getting this set working.    

    

 

hemenex
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hemenex replied on Fri, Apr 13 2012 8:54 PM

I'm using these capsuled ones (PIHER PT10L Series)

example

Datasheet is here

  Gunther

Step1
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Step1 replied on Fri, Apr 13 2012 8:57 PM

I use Piher trimmers which are enclosed and available in identical values and spacing.

Olly

Dillen
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Dillen replied on Fri, Apr 13 2012 9:17 PM

I use the Piher trimmers too but also other types.
The original trimmers lasted 20+ years and so will the new ones so that'll be fine.
The Piher seems to be good quality but, even if they are "closed" to some extent, they are not hermetically
sealed so they will still degrade and, unlike the skeleton types, you actually cannot tell the condition, oxidation etc.
by looking at them.
But they'll be fine for your Beocenter. Probably slightly better than the original ones.

Martin

John
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John replied on Sat, Apr 14 2012 9:34 AM

Thanks Guys, I just have to find a UK based supplyer.

   John.

Step1
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Step1 replied on Sat, Apr 14 2012 10:56 AM

PM sent

Olly

John
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John replied on Sat, Apr 14 2012 10:38 PM

Thank you Step1, but computer says 1 in stock in Hull and I need 6  It looks like I would have to travel to 6 major Towns around Yorkshire to get enough. I hope someone knows of another supplier.

   John.

 

Step1
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Step1 replied on Sat, Apr 14 2012 11:32 PM

Bloody useless aren't they lol. Let me know what values you want I might have some spare...

I normally either order from an American supplier with a load of other stuff once in a while (free shipping over £50) or order from them a large quantity of trimmers to get the free postage.

Olly

John
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John replied on Sat, Apr 14 2012 11:54 PM

Hi Step1 Thanks,  All 250R If you had 2 that would get one Beocenter 7002 set working. And I will contact Mxxxxx to find out lead time on another 4 all 250R.  Please Pm me re cost if you can find any.                                    I have never had any Beo equipment before and in the space of one month I have got a Beocenter 7000, 2x 7002  plus tape recorder, CD player oh and a 1900 and 3300. All from different places and a story behind each. 

       John.

Søren Mexico
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I use these

Collecting Vintage B&O is not a hobby, its a lifestyle.

John
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John replied on Mon, Apr 16 2012 10:29 AM

Hi Soren, Thanks but I would like to find an English supplyer. I am able to get 220R presets from many places. The set is a Beocenter 7002  and  it is 3R224) "idle curent set" anyone know why I could not use 220r instead of the 250r?  The resistor  that is working is set and measures 100r "where it is set at" and the slider is linked  to one end of the carbon track.

Would 220r replace 250r ?

Thanks for looking John.

Dillen
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Dillen replied on Mon, Apr 16 2012 10:50 AM

220 Ohm trimmers will be fine in this circuit.

Martin

John
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John replied on Mon, Apr 16 2012 2:05 PM

Thank you Martin for your prompt reply, and with what I wanted to hear.

Best wishes, John.

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