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OK. The manual is with the B&K scope here. When there is a quietBottom line: if you displayed color bars on the Compaq the scope photo
from Tek will be close to what you see on your scope once you get the
sweep and gains set up. The trickiest part of TV is triggering the
scope but many scopes have a TV mode to make it easier.
Hi friends see this webpage
There hasn't been a posting to s.e.r from AIOE in a month, so it looksI apologize for the wrong group. This should be on s.e.repair but my
local ISP doesn't support Usenet anymore and aioe.org tells me I'm banned
from posting there. WTF!? I have no idea of the reason.
Eternal september. (Go their web page, do the captcha thing, they sendI'm also open to suggestions on better servers.
Mark Zenier mzenier@eskimo.comAnyway, does anyone have a schematic for this receiver? I couldn't find
anything on the net about it except a few photos.
http://farm6.static.flickr.com/5103/5557505722_810b288c35.jpg
Got this little receiver at a flea market. It seemed mostly working, but
audio at maximum level was barely audible and heavily distorted.
Once brought home it showed traces of previous repairs (or attempts).
It turned out there was an open transistor in the audio amp stage, a
burnt resistor and two bulged capacitors. Now it works on all bands but
the VHF one, so a schematic would help to find the problem.
Thanks!
if the battery charger is defective, it would / could cause buzzing.Is this a known problem please? Buzzes continuously except when
connected to computer
Wont charge battery at all either. Battery is either completely dead
or the buzzing and the charging problem are connected somehow. Is
there anything which can be done about this? Garmin have helpfully
offered to replace it but want something just over the used value for
the unit to do it. Not sure if it is worth spending money on it??
It works fine otherwise and has updated maps. Don't know what features
newer units have which I might need.
Could buzzing be a short in the battery which could be fixed simply by
replacing the battery? Or should i just disconnect the speaker somehow
pending someone figuring out what is wrong with it?
Thanks for that but it buzzes on two adapters as well as on the acOn Feb 2, 10:09 pm, Austen <austen.steinb...@gmail.com> wrote:
Is this a known problem please? Buzzes continuously except when
connected to computer
Wont charge battery at all either. Battery is either completely dead
or the buzzing and the charging problem are connected somehow. Is
there anything which can be done about this? Garmin have helpfully
offered to replace it but want something just over the used value for
the unit to do it. Not sure if it is worth spending money on it??
It works fine otherwise and has updated maps. Don't know what features
newer units have which I might need.
Could buzzing be a short in the battery which could be fixed simply by
replacing the battery? Or should i just disconnect the speaker somehow
pending someone figuring out what is wrong with it?
if the battery charger is defective, it would / could cause buzzing.
Technically, the charger might be putting out AC instead of DC.
If the buzzing is caused by something in the device itself, I wouldOn Feb 3, 8:39 pm, "hrhofm...@att.net" <hrhofm...@att.net> wrote:
On Feb 2, 10:09 pm, Austen <austen.steinb...@gmail.com> wrote:
Is this a known problem please? Buzzes continuously except when
connected to computer
Wont charge battery at all either. Battery is either completely dead
or the buzzing and the charging problem are connected somehow. Is
there anything which can be done about this? Garmin have helpfully
offered to replace it but want something just over the used value for
the unit to do it. Not sure if it is worth spending money on it??
It works fine otherwise and has updated maps. Don't know what features
newer units have which I might need.
Could buzzing be a short in the battery which could be fixed simply by
replacing the battery? Or should i just disconnect the speaker somehow
pending someone figuring out what is wrong with it?
if the battery charger is defective, it would / could cause buzzing.
Technically, the charger might be putting out AC instead of DC.
Thanks for that but it buzzes on two adapters as well as on the ac
adapter which I have to use in home while trying to figure out what is
going on with this unit:
OK: We rarely use sound on this: I suppose I can just stick a plug inOn Feb 5, 7:43 am, Austen <austen.steinb...@gmail.com> wrote:
On Feb 3, 8:39 pm, "hrhofm...@att.net" <hrhofm...@att.net> wrote:
On Feb 2, 10:09 pm, Austen <austen.steinb...@gmail.com> wrote:
Is this a known problem please? Buzzes continuously except when
connected to computer
Wont charge battery at all either. Battery is either completely dead
or the buzzing and the charging problem are connected somehow. Is
there anything which can be done about this? Garmin have helpfully
offered to replace it but want something just over the used value for
the unit to do it. Not sure if it is worth spending money on it??
It works fine otherwise and has updated maps. Don't know what features
newer units have which I might need.
Could buzzing be a short in the battery which could be fixed simply by
replacing the battery? Or should i just disconnect the speaker somehow
pending someone figuring out what is wrong with it?
if the battery charger is defective, it would / could cause buzzing.
Technically, the charger might be putting out AC instead of DC.
Thanks for that but it buzzes on two adapters as well as on the ac
adapter which I have to use in home while trying to figure out what is
going on with this unit:
If the buzzing is caused by something in the device itself, I would
check for faulty capacitors.
The stability of the sound circuit could depend on the battery having a lowOn Feb 5, 11:21 am, spamtrap1888 <spamtrap1...@gmail.com> wrote:
On Feb 5, 7:43 am, Austen <austen.steinb...@gmail.com> wrote:
If the buzzing is caused by something in the device itself, I would
check for faulty capacitors.
OK: We rarely use sound on this: I suppose I can just stick a plug in
the earphone socket. Are there any more widespread consequences to
leaky caps on a unit like this please? Would they prevent the unit
charging its battery? I suspected that no one would think that a
short in the battery would be causing the buzzing!
No, as I said, this problem occurs when plugged into DC power,It's not nice to criticize when someone asks for help -- but you should have
learned in school that a dead battery means that a device will just sort of
lie there and do nothing.
Why the unit should work properly when being powered by the 5V from the USB
cable, but otherwise produce a buzz, is not clear. How does it work when
being powered by your car's battery (that is, the plug-in cable)?
It's almost certainly not the battery. As you point out, it's difficult to
replace SMDs. I would suggest sending it back to Garmin.
Only caught a few of the posts in this thread, so if I'm too far off baseSorry, FWIW, for the benefit of onlookers who dont know this unit, it
has TWO usb ports: One for power in the back and a separate data-only
port to plug it into the computer at the side. It buzzes until the side
usb port is connected to a computer, - it gives a splash-screen and then
as soon as the connection is recognised, the buzzing stops.
Surely all small low-voltage power supplies these days are switched-modeOn Thu, 09 Feb 2012 10:12:31 -0800, Austen wrote:
Sorry, FWIW, for the benefit of onlookers who dont know this unit, it
has TWO usb ports: One for power in the back and a separate data-only
port to plug it into the computer at the side. It buzzes until the
side usb port is connected to a computer, - it gives a splash-screen
and then as soon as the connection is recognised, the buzzing stops.
Only caught a few of the posts in this thread, so if I'm too far off
base I apologise. Many of the cheap power supplies are half-wave
(rectified one way only instead of through a bridge. They rely on a
capacitor to modify the intermittent "DC" to a (sort of) constant
voltage. It may be that the design of the Nuvi has this capacitor
within the body of the unit, so that if this capacitor has gone down,
the smoothing will be non- existent. If the buzz is mains frequency
this would support the hypothesis. If you can find a good quality
full wave power supply, and this eliminates or markedly reduces the
buzz, it would (almost) prove the case.
Keith
I'm confused.Sorry, FWIW, for the benefit of onlookers who dont know this unit, it
has TWO usb ports: One for power in the back and a separate data-only
port to plug it into the computer at the side. It buzzes until the
side usb port is connected to a computer, - it gives a splash-screen
and then as soon as the connection is recognised, the buzzing stops.
There's a USB port on the GPS unit and there's a USB port on the carOn Thu, 9 Feb 2012 10:12:31 -0800 (PST), Austen
austen.steinberg@gmail.com> put finger to keyboard and composed:
Sorry, FWIW, for the benefit of onlookers who dont know this unit, it
has TWO usb ports: One for power in the back and a separate data-only
port to plug it into the computer at the side. It buzzes until the
side usb port is connected to a computer, - it gives a splash-screen
and then as soon as the connection is recognised, the buzzing stops.
I'm confused.
According to the following guide, one of the three options for
charging the battery is to "connect the AC adapter to a wall outlet
and the mini-USB connector on the side of the nuvi".
http://www8.garmin.com/manuals/Nuvi350_QuickReferenceGuide.pdf
A second way is to "connect the USB cable to the nuvi and your
computer".
The guide does not mention two USB ports.
- Franc Zabkar
There's a USB port on the GPS unit and there's a USB port on the carOn Thu, 9 Feb 2012 10:12:31 -0800 (PST), Austen
austen.steinberg@gmail.com> put finger to keyboard and composed:
Sorry, FWIW, for the benefit of onlookers who dont know this unit, it
has TWO usb ports: One for power in the back and a separate data-only
port to plug it into the computer at the side. It buzzes until the
side usb port is connected to a computer, - it gives a splash-screen
and then as soon as the connection is recognised, the buzzing stops.
I'm confused.
According to the following guide, one of the three options for
charging the battery is to "connect the AC adapter to a wall outlet
and the mini-USB connector on the side of the nuvi".
http://www8.garmin.com/manuals/Nuvi350_QuickReferenceGuide.pdf
A second way is to "connect the USB cable to the nuvi and your
computer".
The guide does not mention two USB ports.
- Franc Zabkar
AIUI, the GPS can be powered and charged either via the side mini-USBMine plugs directly from the DC cord & it is a flat connector, not USB. That
is how I deliver power to the unit. The true USB port is only used when I
connect it to a computer. I have mine mounted on my motorcycle, bypassing
the stand it came with.
look through them, much appreciated.On Wednesday, February 29, 2012 11:47:39 PM UTC-6, awni wrote:
Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.
any help will be greatly appreciated.
You could also try here: http://groups.google.com/group/comp.sys.laptops/topics?hl=en
Thank you, this is a good start, I will visit these two news groups and
This NG might not be the best source of help. Have you tried comp .Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.
any help will be greatly appreciated.