Toshiba TV29C90 problem; Image fades to black...

[William Sommerwerck]

Some DMM user manuals suggest that you briefly short the diode while the
test leads are attached. This forces the meter to downrange and give a
less-inaccurate reading of the forward resistance when the short is removed.

 

[William Sommerwerck]

Last time I downloaded floppy boot disks from the Interweb,
most of them (95 and 98) wouldn't work, don't know why.

The CD ROM -- such as the one for W2K -- should have a utility that creates
the required floppies.

 

[bz]

msg <msg@_cybertheque.org_> wrote in
news:UsednafPQJ7OiKfVnZ2dnUVZ_sbinZ2d@posted.cpinternet:

My posts are showing up in the google archives however...

Just wondering,

I C U






--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[Phil Allison]

"William Sommerwanker"

Some DMM user manuals suggest that you briefly short the diode while the
test leads are attached.

** Must be only prehistoric ones - I bet.

This forces the meter to downrange and give a
less-inaccurate reading of the forward resistance when the short is
removed.

** Neither manual nor auto-ranging DMMs have enough volts available on the
ohms ranges to forward bias a single silicon diode - let alone a series
string of them, as found in microwave oven diodes.

Most DMMs have " diode test " ranges fitted, which will supply up to a
couple of volts with a fixed current of about 1 mA. The reading is then in
volts or millivolts.



....... Phil

 

[Phil Allison]

"William Sommerwanker"

Some DMM user manuals suggest that you briefly short the diode while the
test leads are attached.

** Must be only prehistoric ones - I bet.

This forces the meter to downrange and give a
less-inaccurate reading of the forward resistance when the short is
removed.

** Neither manual nor auto-ranging DMMs have enough volts available on the
ohms ranges to forward bias a single silicon diode - let alone a series
string of them, as found in microwave oven diodes.

Most DMMs have " diode test " ranges fitted, which will supply up to a
couple of volts with a fixed current of about 1 mA. The reading is then in
volts or millivolts.



....... Phil

 

[William Sommerwerck]

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

The Fluke 87 does have a separate diode test. However, I'm almost certain I
read what I read in the 87's manual -- but I'm not sure, and I don't have
the time to look for it.

 

[William Sommerwerck]

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

The Fluke 87 does have a separate diode test. However, I'm almost certain I
read what I read in the 87's manual -- but I'm not sure, and I don't have
the time to look for it.

 

[gareth magennis]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:7ZSdnf6TSfErPafVnZ2dnUVZ_gqdnZ2d@comcast.com...

Last time I downloaded floppy boot disks from the Interweb,
most of them (95 and 98) wouldn't work, don't know why.

The CD ROM -- such as the one for W2K -- should have a utility that
creates
the required floppies.

Just had a look on my Win98SE disk and can't find the utility amongst the
zillions of files. I know there is one that launches during setup, but can
you launch it just off the CD?



Gareth.

 

[gareth magennis]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:7ZSdnf6TSfErPafVnZ2dnUVZ_gqdnZ2d@comcast.com...

Last time I downloaded floppy boot disks from the Interweb,
most of them (95 and 98) wouldn't work, don't know why.

The CD ROM -- such as the one for W2K -- should have a utility that
creates
the required floppies.

Just had a look on my Win98SE disk and can't find the utility amongst the
zillions of files. I know there is one that launches during setup, but can
you launch it just off the CD?



Gareth.

 

[Graz]

On Sat, 24 May 2008 14:39:18 +0000 (UTC), bz
<bz+ser@ch100-5.chem.lsu.edu> wrote:

dannydee@nospammm.com wrote in news:3u5g34pgvv2s9adjrn8nj0vggddvpnu0sk@
4ax.com:

Security code ????? WTF are you talking about. This is a radio, not
a bank safe. Are you serious about this?

Yep. The radio in my wifes 93 Honda isn't working right now because we need
to go to the dealer and get the code. We had to pull a fuse to check
something and have lost the code.

I have not dealt with any
of the new stuff like this. Why is a security code needed and where
is it entered?

Most car radios/stereos now have a factory programmed security code.
If the power is disconnected, you need to key the code in through the
channel buttons before the radio will work.

This is to discourage thieves from ripping out your dash to steal your
radio.
They can't use or sell it (or that is the theory) because it can't be used
without the code.

Many more recent car radios have "Face Off" security. The front panel
is removable and is supposed to be taken with you when you leave the
car.

 

[Graz]

On Sat, 24 May 2008 14:39:18 +0000 (UTC), bz
<bz+ser@ch100-5.chem.lsu.edu> wrote:

dannydee@nospammm.com wrote in news:3u5g34pgvv2s9adjrn8nj0vggddvpnu0sk@
4ax.com:

Security code ????? WTF are you talking about. This is a radio, not
a bank safe. Are you serious about this?

Yep. The radio in my wifes 93 Honda isn't working right now because we need
to go to the dealer and get the code. We had to pull a fuse to check
something and have lost the code.

I have not dealt with any
of the new stuff like this. Why is a security code needed and where
is it entered?

Most car radios/stereos now have a factory programmed security code.
If the power is disconnected, you need to key the code in through the
channel buttons before the radio will work.

This is to discourage thieves from ripping out your dash to steal your
radio.
They can't use or sell it (or that is the theory) because it can't be used
without the code.

Many more recent car radios have "Face Off" security. The front panel
is removable and is supposed to be taken with you when you leave the
car.

 

[Phil Allison]

"William Sommerwanker Snipping Cunthead "

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

** Where is your proof - fuckwit ??

The Fluke 87 does have a separate diode test.

** Yawwnnnnnnn

However, I'm almost certain I
read what I read in the 87's manual -- but I'm not sure,

** You are not sure if your arse is on fire or not - fuckwit.

and I don't have the time to look for it.

** What a pathetic excuse for a liar.



...... Phil

 

[Phil Allison]

"William Sommerwanker Snipping Cunthead "

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

** Where is your proof - fuckwit ??

The Fluke 87 does have a separate diode test.

** Yawwnnnnnnn

However, I'm almost certain I
read what I read in the 87's manual -- but I'm not sure,

** You are not sure if your arse is on fire or not - fuckwit.

and I don't have the time to look for it.

** What a pathetic excuse for a liar.



...... Phil

 

[bz]

"ctops.legal" <ctops.legal@gmail.com> wrote in news:e2a64ef5-5899-49ff-
b9f2-9f5115acc1ed@a1g2000hsb.googlegroups.com:

Whts I mean is the correct ip info, the sorcecode that makes
thunderbird have the ctrl-U feature must have been written into a
custom software package ?

Go to the 'View' option on the taks bar.
Look down the choices for 'Message source CTRL-U'

No custom software package needed.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"ctops.legal" <ctops.legal@gmail.com> wrote in news:e2a64ef5-5899-49ff-
b9f2-9f5115acc1ed@a1g2000hsb.googlegroups.com:

Whts I mean is the correct ip info, the sorcecode that makes
thunderbird have the ctrl-U feature must have been written into a
custom software package ?

Go to the 'View' option on the taks bar.
Look down the choices for 'Message source CTRL-U'

No custom software package needed.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in
news:mPednTu94-URAqfVnZ2dnUVZ_vudnZ2d@comcast.com:

I can think of reasons for not having a foil-covered bench, but rapid
discharge of static potentials isn't one of them.

Yeah. Like when working on an AC/DC 5 tube type radio chassis

I usually just cover a sheet of styrafoam with foil when I am putting
together something that uses cmos chips like the
http://wb6dhw.com/AD995x.html board. And no, that is NOT a picture of the
one I built, mine is not that pretty, but it works!

I've wrapped ICs in aluminum foil when necessary, and never had any
problem.

I'd agree that conductive foam is the best way to store ICs.

Agreed.



--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in
news:mPednTu94-URAqfVnZ2dnUVZ_vudnZ2d@comcast.com:

I can think of reasons for not having a foil-covered bench, but rapid
discharge of static potentials isn't one of them.

Yeah. Like when working on an AC/DC 5 tube type radio chassis

I usually just cover a sheet of styrafoam with foil when I am putting
together something that uses cmos chips like the
http://wb6dhw.com/AD995x.html board. And no, that is NOT a picture of the
one I built, mine is not that pretty, but it works!

I've wrapped ICs in aluminum foil when necessary, and never had any
problem.

I'd agree that conductive foam is the best way to store ICs.

Agreed.



--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[Smitty Two]

In article <n8udnegY_ZBzMafVnZ2dnUVZ_j-dnZ2d@comcast.com>,
"William Sommerwerck" <grizzledgeezer@comcast.net> wrote:

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

Bzzzt. If the Fluke 87 is prehistoric, he wins.

 

[Smitty Two]

In article <n8udnegY_ZBzMafVnZ2dnUVZ_j-dnZ2d@comcast.com>,
"William Sommerwerck" <grizzledgeezer@comcast.net> wrote:

Some DMM user manuals suggest that you briefly
short the diode while the test leads are attached.

Must be only prehistoric ones -- I bet.

If the Fluke 87 is prehistoric, you lose.

Bzzzt. If the Fluke 87 is prehistoric, he wins.

 

[Arfa Daily]

"b" <reverend_rogers@yahoo.com> wrote in message
news:d32e6aab-516d-4e11-9597-13804e2bc75b@m36g2000hse.googlegroups.com...

On 25 mayo, 13:45, Brasto <bram.st...@gmail.com> wrote:
This DENON has a separate Powersupply board which is totally
inoperative. Yes it does charge the Big Reservoir ELCO upto 350VDC but
no further SMPS action noted,
I replaced as a shotgun approach the Q1 FET and the Optocoupler
SFH617.
Not having its schematic I have been unable to identify the FET
driving components.......
Is Mark still out there fighting the SPAM allowing me to get some
light on the most likely cause of failure?
TY
Brasto

look for a small value cap in the SMPS primary or near its IC. often
these are something like 1uF or 4.7UF and go bad preventing the psu
starting.

As well as the startup supply decoupling cap detailed above, check also the
startup resistor(s). Usually either a single resistor of 100k or so, or a
couple of lower values in series. Normally connects directly from the "+"
terminal of the main filter cap, to a pin on the controller IC (the same pin
as that small value cap connects to). Very common for these resistors to
fail open. Usual symptom is that the supply works fine until one day the
unit is unplugged, or there is a power failure, after which, it never
restarts.

Arfa