BSS DPR 402 Broken Pot/Shaft Replacement, ideas

[Farringdon]

Got a broken shaft in our BSS DPR402.  Tried superglueing it back on but didn't work.  Opening the top up, it looks like the pot is not easy to get to.

Any advice?  Is glueing not an option?  I'm a bit of a novice at this  :-[

Thank you.

 

[pvision]

Broken pots are not uncommon on those - the shafts are quite thin & fragile. BSS no longer supports the DPR-402 so you won't get any help there

Glueing is not going to work. You'll have to dismantle the thing and replace the pot. According to the schematic it's a 50K pot. If they have 1/8" shafts this search will find some options. You'll have to check if it's linear or log

http://uk.farnell.com/webapp/wcs/stores/servlet/Search?catalogId=15001&langId=44&storeId=10151&categoryId=700000005476&showResults=true&aa=true&sf=502&pf=110144408,110159645,110163928,110167408,110416792

Nick Froome

 

[Farringdon]

Thanks for that.  Shame they break so easily, it's just a bit of plastic.

Will check the link you provided.

 

[studio5c]

Took a look at your chat as I had the same problem with 2 broken pots on an old 402

After a long time dismantling the 402 I stuck in two Vishay pots (linear) from CPC :

https://cpc.farnell.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&langId=69&urlRequestType=Base&partNumber=RE04549&storeId=10180


Bourns - the makers of the original pots - didn't answer my request for their current equivalent but the code on the side of both the broken pots ( Ratio and De-ess amount) being  91C1DD24E18  50K MEXICO J9006X seem to indicate a linear 50k

Bit fiddly especially as the Vishay pots are physically smaller

Videoed myself struggling along fitting them if you're interested

But the 402 now seems to be working fine

Best

Jon

 

[danielgriffiths1790]

Hi Jon,

Would you mind sharing that video? I am going to attempt to repair my attack pot but I am a little apprehensive.

Thanks,
Dan

 

[pvision]

I have had one or two BSS DPR-402s and was underwhelmed with the first one. The later one sounded much nicer to my ears and I think there is a serial number at which part of the circuitry went from transistor to IC

The later model sounded much smoother and happier when compressing heavily

Nick Froome