In article ,
Clive wrote:

"Mark Zenier" wrote in message
...
In article ,
Clive wrote:
Hi all
I have a Sony sw-77 and it appears to be acting up.
It seems to have a problem in the power dept, now I'm not sure if it's
because of the batteries, as I have cheap things in it at the moment, but
its still the same with the ac power supply fitted, it sort of crackles
and
goes quiet for a few seconds, then sometimes it sounds as if it drifts off
frequency, but then it comes back again, it is an intermittant problem,
but
very annoying, any ideas anyone please

I've had problems with the coaxial(barrel connector) power jack on
various equipment. The connections to the circuit board go open because
it gets stressed a lot with the plug and cord getting moved or bumped
and the only thing holding it in place is solder. And in some stuff,
there's a switch to disconnect the battery built into the power jack so
that supply goes through that same problematic part.

Wiggle it and see...

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)


Hi Mark
Yes,I see your point, it does crackle a bit when I move it around.
I think it could be a problem with the voltage stabilizer, as it sort of
goes haywire from time to time, getting the same symptoms you get when
batteries are running low, also it goes ballistic when you push the light
button.
Further investigation I think is needed

It could also be a poor (resistive) connection in the wires/traces
supplying the power. I would try resoldering the power jack, first
thing.

The frequent problems you find when fixing stuff are simple.
First the connectors, then capacitors, and then you get to
the more esoteric problems. (After you make sure the batteries
are good ;-))

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)

"junius" wrote in message
oups.com...
On May 12, 2:36 pm, "Clive" wrote:
Hi all
I have a Sony sw-77 and it appears to be acting up.
It seems to have a problem in the power dept, now I'm not sure if it's
because of the batteries, as I have cheap things in it at the moment, but
its still the same with the ac power supply fitted, it sort of crackles
and
goes quiet for a few seconds, then sometimes it sounds as if it drifts
off
frequency, but then it comes back again, it is an intermittant problem,
but
very annoying, any ideas anyone please
tia
Clive

A suggestion, if you've not gone this route already: Try posing this
question to the folks at the Yahoo SW77 group:
http://groups.yahoo.com/group/SONYICFSW77/

Best of luck,

Junius

Hi Guys
Well, I sorted it out at last, quite simple really, I took it apart and
noticed that there is a block connector with about 8 or 9 wires running into
it near where the battery live terminal is. It had worked its way loose and
was only about half way on the connector at an angle, I simply pushed it on
the connector properly and now its working fine.
I found out that these wires from the connector run parralell with the
batteries in the same compartmant, they had come away from the sticky tape
stuff they use to hold them in place out of the way of the batteries, so
over time when I was re-newing the batteries the sides of the batteries were
pulling these wires downwards slightly, causing the other end where the
block connector is to slowly come of the connector. I put fresh tape on the
wires and taped them out of the way of the batteries, Everything is now
working perfect. I am glad to say. Its been running now for 18 hours without
a glitch :-))
regards
Clive

"junius" wrote in message
oups.com...
On May 12, 2:36 pm, "Clive" wrote:
Hi all
I have a Sony sw-77 and it appears to be acting up.
It seems to have a problem in the power dept, now I'm not sure if it's
because of the batteries, as I have cheap things in it at the moment, but
its still the same with the ac power supply fitted, it sort of crackles
and
goes quiet for a few seconds, then sometimes it sounds as if it drifts
off
frequency, but then it comes back again, it is an intermittant problem,
but
very annoying, any ideas anyone please
tia
Clive

A suggestion, if you've not gone this route already: Try posing this
question to the folks at the Yahoo SW77 group:
http://groups.yahoo.com/group/SONYICFSW77/

Best of luck,

Junius


Hi Junius
Thanks for that. I did what you said and was given the step by step guide
from a guy on there to fix it, please see other post
thanks Junius, really appreciate it.
Clive

On May 18, 9:31 am, "Clive" wrote:
"junius" wrote in message

oups.com...





On May 12, 2:36 pm, "Clive" wrote:
Hi all
I have a Sony sw-77 and it appears to be acting up.
It seems to have a problem in the power dept, now I'm not sure if it's
because of the batteries, as I have cheap things in it at the moment, but
its still the same with the ac power supply fitted, it sort of crackles
and
goes quiet for a few seconds, then sometimes it sounds as if it drifts
off
frequency, but then it comes back again, it is an intermittant problem,
but
very annoying, any ideas anyone please
tia
Clive

A suggestion, if you've not gone this route already: Try posing this
question to the folks at the Yahoo SW77 group:
http://groups.yahoo.com/group/SONYICFSW77/

Best of luck,

Junius

Hi Junius
Thanks for that. I did what you said and was given the step by step guide
from a guy on there to fix it, please see other post
thanks Junius, really appreciate it.
Clive- Hide quoted text -

- Show quoted text -

No problem. Glad you were able to find the required assistance to
resolve your radio's problem. The 'SW77 is a really nice set, so I
can definitely understand your desire to keep it running properly!

Best,

Junius