Date   

Re: 5113 calibration problem

Bill (Doc) Courtright
 

The first thing before making any adjustments is to be sure the power supply voltages are correct. It is also possible that the Plug ins were set up for a non storage mainframe which has a larger CRT and needs more deflection. I have had that problem in reverse where there wasn't enough deflection since the Plug ins came from a storage frame. A matter of adjustment there.

Bill

-----Original Message-----
From: Hrvoje Posilovic
To: tekscopes <tekscopes@...>
Sent: Sun, Dec 29, 2013 2:00 pm
Subject: [TekScopes] 5113 calibration problem


This is my first post to this group. I am a new 5113 owner. I like this fine instrument. The scope has 5B12N time base, 5A21N differential amplifier and 5A14N amplifier. I have a problem with the calibration. Both, the vertical and horizontal deflection are too high. I tested both amplifiers. I tried to adjust amplifier gain, but vertical deflection is still too high. The trimpot is now on its max position. Then tried adjusting the mainframe vertical deflection gain, but the gain can not be reduced enough. The same is with the horizontal deflection.
 
Please, can anybody help me with this problem?
 
Regards,
Hrvoje



Re: 5113 calibration problem

Brad Thompson <brad.thompson@...>
 

On 12/29/2013 2:00 PM, Hrvoje Posilovic wrote:
This is my first post to this group. I am a new 5113 owner. I like this
fine instrument. The scope has 5B12N time base, 5A21N differential
amplifier and 5A14N amplifier. I have a problem with the calibration.
Both, the vertical and horizontal deflection are too high. I tested both
amplifiers. I tried to adjust amplifier gain, but vertical deflection is
still too high. The trimpot is now on its max position. Then tried
adjusting the mainframe vertical deflection gain, but the gain can not
be reduced enough. The same is with the horizontal deflection.
Please, can anybody help me with this problem?
Regards,
Hrvoje
Hello, Hrvoje--

Are the CRT display's traces reasonably bright, or are they dim?

I'm not familiar with the 5113's circuitry, but on other scopes
I've worked on, lower-than-normal acceleration-anode voltage
has the effect of increasing deflection sensitivity while dimming
the trace.

73--

Brad AA1IP


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5113 calibration problem

Hrvoje Posilovic <h_posilovic@...>
 

This is my first post to this group. I am a new 5113 owner. I like this fine instrument. The scope has 5B12N time base, 5A21N differential amplifier and 5A14N amplifier. I have a problem with the calibration. Both, the vertical and horizontal deflection are too high. I tested both amplifiers. I tried to adjust amplifier gain, but vertical deflection is still too high. The trimpot is now on its max position. Then tried adjusting the mainframe vertical deflection gain, but the gain can not be reduced enough. The same is with the horizontal deflection.
 
Please, can anybody help me with this problem?
 
Regards,
Hrvoje


Re: OT LOL

stefan_trethan
 

I have already analyzed the growth opportunities and come to the
following conclusion after many hours of careful market studies:

A) A fool and his money are soon parted.

B) There's a sucker born every minute.

Given these two insights our potential earnings are virtually unlimited.

ST

P.S.: According to B) we can expect to manufacture 500k units/annum,
so sourcing a ready supply of tubes should be our immediate concern!


On Sun, Dec 29, 2013 at 4:54 PM, geoffrey thomas
<geoffreythomas@onetel.com> wrote:
We need a business plan, first, in what may be a risky venture. Firstly
we need an estimate of the no. of audiophools with that amount of spare
capital, and we need to get a favourable review of our product versus
his/hers* on a price basis on one of the golden ear websites - anyone
here good at hacking? We could even make ours work, as a bonus.

Geoff.

* Greek names defeat me.

p.s. looks like somebody else has the same idea :

http://www.ebay.com/itm/331079777606


On 29/12/2013 15:44, Stefan Trethan wrote:
What do you say, we buy the schematics together, build a couple of
amplifiers (should be easy enough) and GET RICH QUICK selling them at
half his price!

ST

On Sun, Dec 29, 2013 at 4:21 PM, geoffrey thomas
<geoffreythomas@onetel.com> wrote:
If you want to find out what may be inside it he's selling the schematic
for a bargain $29.

http://www.ebay.com/itm/Schematic/231122278560?

Geoff.

------------------------------------

Yahoo Groups Links



Re: OT LOL

Peter Gottlieb <hpnpilot@...>
 

"Dead batteries sold free of charge."

The part about being transparent is true... you can see right through the thing!


Re: OT LOL

Shirley Dulcey KE1L
 

A lot of audiophile equipment has crazy prices, but this one is
extreme even for that community. And the maker isn't even making
exaggerated claims about the parts used in the amp - oxygen-free
silver wiring soldered with silver solder, gold plated connectors from
some fancy maker, or some kind of special resistor that costs $10.


Re: OT LOL

snapdiode@...
 

Ah, a 12V battery. "Starved tube" operation.


Re: OT LOL

Geoffrey Thomas
 

We need a business plan, first, in what may be a risky venture. Firstly we need an estimate of the no. of audiophools with that amount of spare capital, and we need to get a favourable review of our product versus his/hers* on a price basis on one of the golden ear websites - anyone here good at hacking? We could even make ours work, as a bonus.

Geoff.

* Greek names defeat me.

p.s. looks like somebody else has the same idea :

http://www.ebay.com/itm/331079777606

On 29/12/2013 15:44, Stefan Trethan wrote:
What do you say, we buy the schematics together, build a couple of
amplifiers (should be easy enough) and GET RICH QUICK selling them at
half his price!

ST

On Sun, Dec 29, 2013 at 4:21 PM, geoffrey thomas
<geoffreythomas@onetel.com> wrote:
If you want to find out what may be inside it he's selling the schematic
for a bargain $29.

http://www.ebay.com/itm/Schematic/231122278560?

Geoff.


Re: OT LOL

stefan_trethan
 

What do you say, we buy the schematics together, build a couple of
amplifiers (should be easy enough) and GET RICH QUICK selling them at
half his price!

ST

On Sun, Dec 29, 2013 at 4:21 PM, geoffrey thomas
<geoffreythomas@onetel.com> wrote:
If you want to find out what may be inside it he's selling the schematic
for a bargain $29.

http://www.ebay.com/itm/Schematic/231122278560?

Geoff.

On 29/12/2013 14:34, Druid Noibn wrote:


Hi,
That's a tad out of my budget...but so is this - 400612373355
Yes, the seller has multiple listings with the same or similar price
for...1x
When I asked why - they responded that their costs are higher....and
thanked me for understanding.
Be well,
DBN


On Saturday, December 28, 2013 11:49 PM, Daniel Koller
<kaboomdk@yahoo.com> wrote:
It's ironic, but that "generation" of Ipod is more obsolete than a
vacuum tube amplifier. It appears to be a first generation Ipod Nano
from about 2005. Not sure how long ago they discontinued it, but the
6th Generation ipod nano touch-screen from only a couple years ago is
thoroughly obsolete. You can't get it repaired and Apple does not
support it in any way except to sell you an "upgrade", i.e. to sell you
a new one.

I fully expect my vacuum tube based 545 scope to be working well
after another 10 "generations" of consumer electronics crap has long
bitten the dust.

I took another look at the photos in the ebay posting. Humorous
indeed - there are no wires in the unit - none of the connectors or tube
sockets appear to be wired! If it sells, I'm going to start selling
dead batteries on e-bay.

Dan

On Saturday, December 28, 2013 9:30 PM, "snapdiode@yahoo.com"
<snapdiode@yahoo.com> wrote:

>There's only one way to be sure. Buy it now.
>
>click!
>
>I'll send it along to Dave Jones "Don't turn it on, take it apart."
Might be his shortest video yet.
>
>
>

------------------------------------

Yahoo Groups Links



Re: OT LOL

Geoffrey Thomas
 

If you want to find out what may be inside it he's selling the schematic for a bargain $29.

http://www.ebay.com/itm/Schematic/231122278560?

Geoff.

On 29/12/2013 14:34, Druid Noibn wrote:


Hi,
That's a tad out of my budget...but so is this - 400612373355
Yes, the seller has multiple listings with the same or similar price
for...1x
When I asked why - they responded that their costs are higher....and
thanked me for understanding.
Be well,
DBN


On Saturday, December 28, 2013 11:49 PM, Daniel Koller
<kaboomdk@yahoo.com> wrote:
It's ironic, but that "generation" of Ipod is more obsolete than a
vacuum tube amplifier. It appears to be a first generation Ipod Nano
from about 2005. Not sure how long ago they discontinued it, but the
6th Generation ipod nano touch-screen from only a couple years ago is
thoroughly obsolete. You can't get it repaired and Apple does not
support it in any way except to sell you an "upgrade", i.e. to sell you
a new one.

I fully expect my vacuum tube based 545 scope to be working well
after another 10 "generations" of consumer electronics crap has long
bitten the dust.

I took another look at the photos in the ebay posting. Humorous
indeed - there are no wires in the unit - none of the connectors or tube
sockets appear to be wired! If it sells, I'm going to start selling
dead batteries on e-bay.

Dan

On Saturday, December 28, 2013 9:30 PM, "snapdiode@yahoo.com"
<snapdiode@yahoo.com> wrote:

>There's only one way to be sure. Buy it now.
>
>click!
>
>I'll send it along to Dave Jones "Don't turn it on, take it apart."
Might be his shortest video yet.
>
>
>


Re: OT LOL

druid_noibn
 

Hi,
 
That's a tad out of my budget...but so is this - 400612373355
 
Yes, the seller has multiple listings with the same or similar price for...1x
 
When I asked why - they responded that their costs are higher....and thanked me for understanding.
 
Be well,
DBN
 
 


On Saturday, December 28, 2013 11:49 PM, Daniel Koller wrote:
 
It's ironic, but that "generation" of Ipod is more obsolete than a vacuum tube amplifier.  It appears to be a first generation Ipod Nano from about 2005.  Not sure how long ago they discontinued it, but the 6th Generation ipod nano touch-screen from only a couple years ago is thoroughly obsolete.  You can't get it repaired and Apple does not support it in any way except to sell you an "upgrade", i.e. to sell you a new one.
 
  I fully expect my vacuum tube based 545 scope to be working well after another 10 "generations" of consumer electronics crap has long bitten the dust.

  I took another look at the photos in the ebay posting.  Humorous indeed - there are no wires in the unit - none of the connectors or tube sockets appear to be wired!  If it sells, I'm going to start selling dead batteries on e-bay.

  Dan

On Saturday, December 28, 2013 9:30 PM, "snapdiode@..." wrote:

>There's only one way to be sure. Buy it now.
>
>click!
>
>I'll send it along to Dave Jones "Don't turn it on, take it apart." Might be his shortest video yet.
>
>
>



Re: OT LOL

Daniel Koller
 

It's ironic, but that "generation" of Ipod is more obsolete than a vacuum tube amplifier.  It appears to be a first generation Ipod Nano from about 2005.  Not sure how long ago they discontinued it, but the 6th Generation ipod nano touch-screen from only a couple years ago is thoroughly obsolete.  You can't get it repaired and Apple does not support it in any way except to sell you an "upgrade", i.e. to sell you a new one.
 
  I fully expect my vacuum tube based 545 scope to be working well after another 10 "generations" of consumer electronics crap has long bitten the dust.

  I took another look at the photos in the ebay posting.  Humorous indeed - there are no wires in the unit - none of the connectors or tube sockets appear to be wired!  If it sells, I'm going to start selling dead batteries on e-bay.

  Dan

On Saturday, December 28, 2013 9:30 PM, "snapdiode@yahoo.com" <snapdiode@yahoo.com> wrote:


There's only one way to be sure. Buy it now.

click!

I'll send it along to Dave Jones "Don't turn it on, take it apart." Might be his shortest video yet.



Re: OT LOL

ictjayhawk@...
 

So who wants to send him a Ebay PM an see if there would be a price break on lots of 100! :)


Re: OT LOL

snapdiode@...
 

There's only one way to be sure. Buy it now.

click!

I'll send it along to Dave Jones "Don't turn it on, take it apart." Might be his shortest video yet.


Re: OT LOL

Don Black <donald_black@...>
 

So why doesn't it list the big selling point? "Never needs battery replacement".

Don Black.

On 29-Dec-13 12:00 PM, snapdiode@... wrote:
 

Pretty sure that's the catch. The Ipod can drive headphones anyways, the "one resistor" is the volume control. I don't see what is powering the tubes, let alone the filaments. This is exactly what it claims to be, "Possibly the closest there is to a wire with power gain!".


There is no power gain, but close! The tubes are decoration, no one said they're working or serving any function.


Like a real estate listing, the whole thing is one giant gotcha.





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Re: OT LOL

Don Black <donald_black@...>
 

Just checked my calnder. Nope, it's not April.

DC through the headphones?

Don Black.

On 29-Dec-13 10:46 AM, Daniel Koller wrote:
 

I want one of these!
"Bandwidth <<0.000001Hz"  That implies it's STABLE to DC, with tubes!  It's a DC-stabilized laboratory amplifier without a chopper.  Cool.  47,000 Drachmas maybe, not $47,000 though.

  Dan

On Saturday, December 28, 2013 6:16 PM, "snapdiode@..." wrote:

>Your usual overpriced eBay auction
>
>331094423899
>
>Really absurd.
>
>
>





This email is free from viruses and malware because avast! Antivirus protection is active.



Re: OT LOL

snapdiode@...
 

Pretty sure that's the catch. The Ipod can drive headphones anyways, the "one resistor" is the volume control. I don't see what is powering the tubes, let alone the filaments. This is exactly what it claims to be, "Possibly the closest there is to a wire with power gain!".


There is no power gain, but close! The tubes are decoration, no one said they're working or serving any function.


Like a real estate listing, the whole thing is one giant gotcha.


Re: OT LOL

Brad Thompson <brad.thompson@...>
 

On 12/28/2013 6:16 PM, snapdiode@yahoo.com wrote:
Your usual overpriced eBay auction

331094423899

Really absurd.
Hello--

Golden ears or brass extremities? You decide<g>.

Now if you'll excuse me, the connectors I have soaking in
liquid nitrogen are ready for their sound tests....

73--

Brad AA1IP


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http://www.avast.com


Re: OT LOL

r.domp.frank@...
 

It *does* include an Apple MP3 player to provide the very best sound on earth: Ka-ching!


Raymond


Re: OT LOL

J. L. Trantham
 

Must be part of a government contract.

 

Happy New Year to all.

 

Joe

 

From: TekScopes@... [mailto:TekScopes@...] On Behalf Of snapdiode@...
Sent: Saturday, December 28, 2013 5:16 PM
To: TekScopes@...
Subject: [TekScopes] OT LOL

 

 

Your usual overpriced eBay auction

331094423899

Really absurd.

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