Go to the first post in this thread, Fran.
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Go to the first post in this thread, Fran.
Anybody wants anything else adding or changing etc , just let us know, the idea is to make things as easy as possible for folks if they fancy fiddling :)Quote:
Originally Posted by fmzip
Definitely a very good post Leo. I think it may be a good idea to list the manufacturer part numbers for each mod. Took me some time to track down the Wima Cap, the Nichicon Muse Caps and the Elna's as well.
Nichicon Muse Caps
UES1C470MPM
Elna Caps
RFS-25v221 2pcs
RFS-16V101 1pc
RFS-16V100 8pcs
Wima Cap
MKS20-.068/63/10
Thanks ! their now addedQuote:
Originally Posted by fmzip
Link for the alternative Dexa regulators which I am running:
http://www.newclassd.com/index.php?page=34
And the links for the Murata Regulators, 7805SR-C & 7812SR-C:
http://parts.digikey.com/1/parts/159...-7805sr-c.html
http://search.digikey.com/scripts/Dk...words=7812sr-c
Thanks guys, now updated :)
I've been fiddling with my 7520, upgraded all the caps, DAC, power regs etc. Unfortunately I ran into a snag, if I press any coax input, all the leds go on. If I press the USB switch, all the LEDS go off.
Does anyone have a schematic for this unit ? I sent an email to Stan, waiting on a reply.
Any help would be greatly appreciated.
Thanks,
Fran
Are you still using the original 12V power supply? If so you either need to contact Stan to buy a Caiman 15V PSU or possibly source a linear one your self like some of us have done.
I suspect you're still using the 12V supply as I accidentaly used my 12V supply recently and ran into the same problem. I thought I'd knackered my DAC but it just wasn't getting enough juice to make the 12V reg work properly. The 12V Murata reg needs at least 13V to work peoperly.
I hope that helps. :)
I have a 18V supply running at 15.65 volts. It worked perfectly for a few minutes, then I started tinkering. :( I touched up all my ugly solder joints with my new Weller iron and now I have the problem.
Really stumped here without a schematic. I am hoping it is my ribbon cable that connects the two boards together, one basically broke completely apart. Not sure if this is the problem or is now the problem as I've been handling the boards over and over looking for the issue. I will be removing both cables and soldering wire point to point, keeping my fingers crossed that this is the problem.
Being in the states, it's not simple to send it in for repair. Plus, I wouldn't want anyone to see my poor soldering skills ;)