My Stontronics psu is on its last legs - it makes the SB3 display
flicker intermittently.
I read about the various mods to fix it but was rather concerned about
whether this would be easy for someone relatively inexperienced at
soldering.
Or should I just get something like
mr-b;527732 Wrote:
Finally there seems to be no Slimdevices or Logitech site selling the
OEM adapters - which leaves the unfortunate customer to scrabble around
...
If you get in touch with Patrick Dixon he should be able to help. Every
SB+ that he sells leaves him with a spare PSU:
https://www.ripcaster.co.uk/node/483
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andynormancx
Yes, it will. Yes, all of them. Yes, SoftSqueeze as well. What ?
I SAID ALL OF THEM !
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Patrick responded PDQ and was good value, so I ordered one from him. It
also saves them going to landfill I guess! Shame I can't say the same
for the Stontronics ... :-(
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mr-b
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Over two weeks later and still working perfectly.
It gets warm, but not hot anymore, thanks to better ventilation.
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Glenn2
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So one can buy a $15 Slim Devices PS
or not, if you're outside the US and Logitech will not sell you one.
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b33k34
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b33k34;408859 Wrote:
So one can buy a $15 Slim Devices PS
or not, if you're outside the US and Logitech will not sell you one.
It was my understanding that just about any country can buy accessories
from the Slim Devices Website. Did you give them a call or Email sales?
Also the OEM
Yes it's a POS PSU without a doubt, and I would suggest nobody ever buys
one! The manufacturer should be deeply ashamed, and given the reported
failure rate they probably are.
However, I already had it, and it cost me pennies to fix it so I did.
It's hugely inefficient of course, and if I
I've got one more squeezebox than power supplies. Logitech are
unhelpful - can't supply a p/s as a spare part - and i bought one of
these Stontronics P/s's on a recommendation from here.
I'd noticed that it ran very hot (which is never a good sign) and it
stopped working some while back.
Glenn2;408758 Wrote:
Finally, I got a proper 7808 (1.5A version) and used that, removing the
zener diode. Both regulators are now properly bolted to the heatsink
(and I applied fresh heat-transfer compound too).
I also followed afblaster's lead from an earlier post and removed some
of
Oh dear, this is the linear PS I bought. What's the executive summary?
Am I better off using the switchmode supply, technically speaking?
Whether the difference is audible is another question - as I've said in
the past, phew ;)
Darren
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darrenyeats
darrenyeats;405584 Wrote:
Oh dear, this is the linear PS I bought. What's the executive summary?
Am I better off using the switchmode supply, technically speaking?
Whether the difference is audible is another question - as I've said in
the past, phew ;)
Darren
Well the design may be
After looking at the circuit I decided the only useable parts from the
supply were the transformer, board and case, so I rebuilt the circuit
using low-noise 1.5A LT1086-5 reg and schottky diodes, plus caps as
recommended in LT's application notes. I mounted the reg in the centre
(bottom of the
seanadams;404849 Wrote:
That doesn't work either. You'd have to increase the input voltage to
compensate for doubling the dropout voltage. Same amps, double the
voltage, and you're in twice as much trouble as where you started!
Hi Sean,
Thanks for the input.
Under load (before the regulator
Glenn2;405302 Wrote:
Hi Sean,
Thanks for the input.
Under load (before the regulator shuts down) there's still over 11V.
That's enough to feed a 7808-7805 combination I would have thought.
The dropout would be shared among the two regulators, no? (and 3V each
should be fine.)
I'd be
Craptastic is a great word to describe it!
I'll update this thread when I've got it up and running.
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Glenn2
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I bought two of these supplies and both failed with the same fault. One
of the 5v regs had blown, so the 5v output was still present with no
load but collapsed when connected to the SB3, so your proposed solution
share the load between the regs probably won't work.
See this thread for my
Thanks for that!
With two regulators in parallel, one is carrying most of the load
current, but this won't happen if the series resistors are added I
think.
The issue I'm facing is that the single 2A 7805 is shutting down
thermally after a few minutes.
I was just looking at the PCB thinking it
Glenn2;404347 Wrote:
b) There is a large heatsink running around the perimeter of the PCB,
which has a regulator on each side. They are both L7805CV (ST brand).
They are 1.5A parts but both are connected directly in parallel, with
their outputs shorted together. This configuration is
Hi,
I bought the 1.5A Stontronics linear PSU from Farnell/CPC and even
managed to convince myself it sounded slightly better...
I bought it at Christmas and for various reasons I've hardly used the
SB3 in that time and it's been unplugged from the wall mostly.
I plugged it in yesterday and it
Oh well - no success.
Seems to work for a while then stops. The regulator protecting itself
I think.
I'll try the two regs with output resistors approach next.
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Glenn2
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