[quote user="Leslie"] Other thing, I want to exchange the yellow led's with green or red I have a faulty MCP5500 board which has lots of red and green leds on the display board. I suppose I can use these instead? [/quote] The problem with this swap is that different colour LEDs have different threshold voltages, or voltage drops over them

Silly me, it even shows in Leslie's picture (and one of the service manuals on site.) No way getting round it then, you'll need a 220u cap. The later crossovers are so different that the upgrade wouldn't be just the swap of a couple of component values.

I'm sure you could hear the change, but the difference maybe won't be dramatic (it was on my RL60.2's...). Easy to do sometime later anyway once you get the more serious problems sorted. Where did you find a 220 uF bipolar? There shouldn't be any, the biggest caps on the crossovers are 68 uF. I wouldn't go below a 100V rating, there

[quote user="Leslie"] No technical support at all? This subject has been put in the right section has it (Workbench)? [/quote] Too many questions in one post I suppose - I read your post earlier but didn't have time to answer... I'll start with the displays. LEDs don't dim with age. Either they are actually just the same brightness

[quote user="chartz"] Ah, and there's a new diamond tip too! And I did pay 20€! [/quote] Well at least that was a sensible price for trying... I've seen these "NOS" cartridges selling for absolutely silly money, and all of them are probably shot, or will quickly be once you start using them. I got lucky once with a 25€

I think there is no button... the input is shared with the P1 radio preset and you'll need to unplug the aux cable when you're not using it!

Yes it's a standard 5 pin DIN connection. I recommend getting a ready made 5pin DIN - 4xRCA adapter, then you can just experiment which two RCAs are the correct ones. If you get a 2xRCA adapter, there's a 50% chance of getting the wrong one!

Ferrofluid! Far out, man!

Seems to fit all requirements. If you share it with other devices, it will need some discipline to not plug it in when adjusted to wrong voltage or polarity, though!

Do you have a particular power supply in mind already? If it is stabilized/regulated, it should work just fine as you are right in your last sentence. An unstabilized, too "heavy" power supply might be a problem as they will output a higher voltage with a smaller load. If you want to be sure, you can measure the output of the power supply