Here`s the Cambridge`s volume-ladder equipped with a new bunch of Fujitsu SY-9W-K. Because of their much lower current they do not develop as much heat as the "massuse"-relais do and as a sideeffect they are less noisy when they switch.
You need 28 of them and perhaps 2 hours time.
You need 28 of them and perhaps 2 hours time.
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@ Nisbeth with a few feet of desolderung wick wire. But you`re right it needs some experience to do it!
Do you have the schematics for it?
Do you have the schematics for it?
Thanks. Yes, I should still have it somewhere. Send me a PM with your email address and I'll see if I can find it.
A vacuum solder gun/pump is best for a professional approach and reduce potential pad damage, although I remember the board being fairly resilient. This totally fixed it for me, I put some adhesive heat sinks on top of the relays when done, as the whole module still gets hot. It doesn't appear to be the most thoughtful design factoring in thermal.
Here`s the original encoder for the preamp, as you can see,- its not a closed design. The two halfs are hold together with clamps that can easily opened and closed again for a complete cleaning and overhaul of the inside.
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Hi there
there is one on eBay Germany for 15€
https://www.ebay.de/itm/28619732014...7YXn35sBkmbuPGF3/VxXYZiJY=|tkp:Bk9SR-LB79H1ZA
Have a look!
Joerg
there is one on eBay Germany for 15€
https://www.ebay.de/itm/28619732014...7YXn35sBkmbuPGF3/VxXYZiJY=|tkp:Bk9SR-LB79H1ZA
Have a look!
Joerg
Nisbeth, did you get it?
Before soldering in,- make sure it is clean and not corroded inside. It has about the same age as yours, just lying around in stock elsewhere. Could have also corroded contacts.
Before soldering in,- make sure it is clean and not corroded inside. It has about the same age as yours, just lying around in stock elsewhere. Could have also corroded contacts.
Yep, I got it. However, it will be at least a few weeks before I have time to attempt the replacement (amp is in storage at the moment). Will report back when I have some results 🙂