WD PRE3 problems, assistance needed. - Page 2 - World-Designs-Forum

bob orbell · #11 9th October 2011, 08:21 AM

Hi KC, strange, I would suggest that you now remove the signal cable connected from the volume pot to the input PCB at the PCB and connect two phono sockets to the cable so as to bypass the input board and relays compleatly, now plug your CD player cable into the sockets and if all is well your pre 3 should work, if it does you will have to remove the input PCB and find the fault. If it does not work then it's back to basics. The PCB can be a sod to remove, all the solder at the roundels needs to be removed or you will damage the PCB. If you can't sort it I will do it for you, but you will need to send it to me at your cost and return cost. Hope this helps you. BOB

KC Jones · #12 9th October 2011, 04:41 PM

All this trouble shooting is a bit beyond my skills I'm afraid. I am able to follow WD style build instructions, but after that I'm flumuxed, besides my wife is complaining she is becomming a Hi-fi-diy widow, so if you could take a look at it for me it would be great.

Strangely I am working in Wellingborough, just down the road from you in Kettering. I could hand deliver it, possibly meet you at Junction 9 of the A14 Odeon car park one evening this week or deliver it to your door if that would best suit?

Of course I will gladly flutter a few notes for any hours accrued.

I have also sent you a PM.

Regards - KC Jones

bob orbell · #13 9th October 2011, 08:58 PM

KC, I have sent you a PM. BOB

KC Jones · #14 10th October 2011, 09:16 PM

The Pre3 has been left in the capable hands of Bob to work some magic.
Thanks Bob.

bob orbell · #15 11th October 2011, 11:02 AM

PRE 3 now up and running, selecor switch connected corectly but set to seven positions not six, oops, now on to the phono 3S,

.

KC Jones · #16 11th October 2011, 05:31 PM

Excellent, not too bad then? Maybe I will make an amp builder one day?
Good luck with the phono; and there's me thinking the Phono was ok, luckily it hapened to be in the boot of my car when I arirved.

cheers KC.

Richard · #17 11th October 2011, 08:46 PM

Quote:

Originally Posted by KC Jones

luckily it hapened to be in the boot of my car when I arirved.

cheers KC.

he he, you should've taken along the washing machine/telly/hairdryer etc keep Bob busy

KC Jones · #18 15th October 2011, 11:30 AM

I have finally powered the PRE3 up and it works a treat. Not sure what the sonic difference is with it in the system, at the moment I can't hear one, so I will give it a good few hours burn in until I deceide if it makes an improvement.

A huge thanks to Bob for sorting it for me. Bob is currently a busy man, so to fix it that quick was really appreciated.

KC Jones

KC Jones · #19 15th October 2011, 11:50 AM

Has anyone else added a PRE into their system and not noticed it, or is that the idea? the PRE just acting as a selector and volume contrrol to let the power amp just do the ''power''
Or maybe the modified volume control on the KAT6550 has something to do with it?

KC

bearded fiddler · #20 15th October 2011, 03:29 PM

KC,
In my system (WAD 300B clone, Quad ESL 63), the Pre3 made a big difference compared to the passive pre I cobbled up myself from an Alps Blue pot, a WD relay switch PCB, some shielded cable and a few RCA sockets. The sound is more powerful and dynamic now, but maybe it lacks a bit of the refinement of the passive. Better valves than the ones supplied can yield a big improvement.

Jan