Need help to identify a russian component

M

MFC

Guest
Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC
 
"MFC" <slotgitt@post.tele.dk> wrote in message
news:460c1ea9$0$13965$edfadb0f@dread15.news.tele.dk...
Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC

Unless you can get the exact information from someone, why not work out what
Click to expand...
the value can/should be.

Measure the applied voltage, what is it, 5, 30, 100, 250???
Is it in a coupling or decoupling circuit?
Is it passing a signal or blocking DC, if so what typical frequency,
50/60Hz, 1kHz, 5,10,100kHz/mHz???

Once you have established the basics, use your imagination as to what would
be a typical value and type of capacitor to be used in that situation.

The + sign on one side of the component *might* indicate that its an
electrolytic cap. However, who knows, it might also idicate the *positive*
side of a diode???
 
On Thu, 29 Mar 2007 22:16:28 +0200, "MFC" <slotgitt@post.tele.dk>
wrote:

Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC
Click to expand...
A clear image would be helpful.
 
Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows much
more about electronic - unfortunately he's out of town in at least 14 days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it with
a new component with the correct "values" ??

Thx,
MFC


"PeterD" <peter2@hipson.net> skrev i en meddelelse
news:3bio03p9co7i4v58thpq04t7llh9cdm6ou@4ax.com...
On Thu, 29 Mar 2007 22:16:28 +0200, "MFC" <slotgitt@post.tele.dk
wrote:

Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC



A clear image would be helpful.
Click to expand...
 
Oh, I'm just a "good electronic-novice freak" so your reply is pretty
confusing for me, but if you are interested then you can read my reply to
PeterD - it contains three links to pictures of the "unidentified" component
and some extra info. But thanks for your reply anyway !! If I not are able
to repair the oscilloscope, then I think one of my friends can help me and I
will then show him your reply, but he's out of town for at least 14
days......

Thx,
MFC


"Farticus" <localhost@127.0.0.1> skrev i en meddelelse
news:ZlXOh.4704$M.2018@news-server.bigpond.net.au...
"MFC" <slotgitt@post.tele.dk> wrote in message
news:460c1ea9$0$13965$edfadb0f@dread15.news.tele.dk...
Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this
(|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC

Unless you can get the exact information from someone, why not work out
what the value can/should be.

Measure the applied voltage, what is it, 5, 30, 100, 250???
Is it in a coupling or decoupling circuit?
Is it passing a signal or blocking DC, if so what typical frequency,
50/60Hz, 1kHz, 5,10,100kHz/mHz???

Once you have established the basics, use your imagination as to what
would be a typical value and type of capacitor to be used in that
situation.

The + sign on one side of the component *might* indicate that its an
electrolytic cap. However, who knows, it might also idicate the *positive*
side of a diode???
Click to expand...
 
"MFC" <slotgitt@post.tele.dk> wrote in message
news:460c7897$0$13936$edfadb0f@dread15.news.tele.dk...
Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it
has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following
picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows
much
more about electronic - unfortunately he's out of town in at least 14
days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it
with
a new component with the correct "values" ??

Thx,
MFC


"PeterD" <peter2@hipson.net> skrev i en meddelelse
news:3bio03p9co7i4v58thpq04t7llh9cdm6ou@4ax.com...
On Thu, 29 Mar 2007 22:16:28 +0200, "MFC" <slotgitt@post.tele.dk
wrote:

Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this
(|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC



A clear image would be helpful.
Click to expand...
Me thinks its a 50uF 6volt electrolytic.
 
On Thu, 29 Mar 2007 22:16:28 +0200, "MFC" <slotgitt@post.tele.dk>
wrote:

Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC
Click to expand...
My *guess* is that it's a 20 microfarad, 50 V electrolytic capacitor.
The Russian "B" corresponds to "V", "Mk" could well mean "Mikro", and
the thing that looks like an "O" split in two is an "F".

If I'm wrong, sorry about the mess caused by the exploding cap!
Hopefully it doesn't take everything else with it... ;-)

Jarkka
 
On 2007-03-30, MFC <slotgitt@post.tele.dk> wrote:
Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:
Click to expand...
Those ones showing the insides look like the insides of electrolytic
capacitors.

Looking at markings on the can

The "B" symbol is a russian V

http://en.wikipedia.org/wiki/Cyrillic_alphabet

transliterated to a latin alphabet the second line reads

"50V 20MKF"

I would guess that that means "50 volts 20 microfarads"

which seems about right for the age and apparent size of the part.

In the west 20uF is not a standard size, but 22uF is, and should be close
enough, given that the capacitance of typical electrolytics is +/- 20% or
worse.

Bye.
Jasen
 
On Fri, 30 Mar 2007 04:40:02 +0200, "MFC" <slotgitt@post.tele.dk>
wrote:

Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows much
more about electronic - unfortunately he's out of town in at least 14 days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it with
a new component with the correct "values" ??
Click to expand...
---
The first line appears to be a logo and type number, the second line
appears to be the voltage, 50V, followed by the capacitance, 100ľF,
and the third line appears to be the date code, the eighth week of
1984.

The + indicates the polarity, and from that, its size and what's
left behind it appears to be an aluminum electrolytic.


--
JF
 
On Fri, 30 Mar 2007 06:16:54 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Fri, 30 Mar 2007 04:40:02 +0200, "MFC" <slotgitt@post.tele.dk
wrote:

Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows much
more about electronic - unfortunately he's out of town in at least 14 days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it with
a new component with the correct "values" ??

---
The first line appears to be a logo and type number, the second line
appears to be the voltage, 50V, followed by the capacitance, 100ľF,
Click to expand...
100? Not 20?

and the third line appears to be the date code, the eighth week of
1984.

The + indicates the polarity, and from that, its size and what's
left behind it appears to be an aluminum electrolytic.
Click to expand...
 
On Fri, 30 Mar 2007 10:26:45 -0400, PeterD <peter2@hipson.net>
wrote:

On Fri, 30 Mar 2007 06:16:54 -0500, John Fields
jfields@austininstruments.com> wrote:

On Fri, 30 Mar 2007 04:40:02 +0200, "MFC" <slotgitt@post.tele.dk
wrote:

Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows much
more about electronic - unfortunately he's out of town in at least 14 days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it with
a new component with the correct "values" ??

---
The first line appears to be a logo and type number, the second line
appears to be the voltage, 50V, followed by the capacitance, 100ľF,

100? Not 20?
Click to expand...
---
Sorry, I meant 20 but I guess the "100"'s from the other photo stuck
in my mind.

Thanks. :)



--
JF
 
On Fri, 30 Mar 2007 04:40:02 +0200, "MFC" <slotgitt@post.tele.dk>
wrote:

Hi again :)

Here is three "picture-links" and a little explanation to each of 'em:

http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1946.JPG
This picture shows the actual component or rather the "shell" only - it has
come off and the rest of the component is still mounted to the circuit
board, but it looks pretty bad (damaged), as shown on the following picture:
http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1947.jpg
(I have made a yellow spot on the damaged component).
The last picture shows two of the same type of component - these are
approximately the same size as the damaged component, but have other
"values": http://sitecenter.dk/slotgitt/nss-folder/mappe/Misc/HPIM1952.JPG

Some further information:
1) The oscilloscope was produced in 1985
2) It worked fine a few days ago, but then suddenly something went wrong.
3) The problem is that only the left half of the screen is working now.

I'm only a "good electronic-novice freak", but have a friend who knows much
more about electronic - unfortunately he's out of town in at least 14 days,
because of his work. If it's possible to identify the damaged Russian
component, can I then destroy more of the oscilloscope by replacing it with
a new component with the correct "values" ??

Thx,
MFC


"PeterD" <peter2@hipson.net> skrev i en meddelelse
news:3bio03p9co7i4v58thpq04t7llh9cdm6ou@4ax.com...
On Thu, 29 Mar 2007 22:16:28 +0200, "MFC" <slotgitt@post.tele.dk
wrote:

Hi

I'm from Denmark and are trying to repair a old Russian oscilloscope. I'm
pretty sure I have found the error, but I can't identify the component's
value. I'm 99.99% sure it's a capacitor - the three lines of text on it
says:

K50-6
50B 20Mko - the o is a Russian character and looks something like this (|)
0884 followed by the number 1 in a square

At last there is a + sign on one side of the component

Can anyone help me what capacitor I can replace this capacitor with ??
any help will be highly appreciated !!

Thanks for reading,
MFC



A clear image would be helpful.
Click to expand...
Hi,

I have used more russian equipment in the past.

I see on one foto 16B 100MKf (f stands for the symbol). I know that
the f means Farad here. The B means volt. So it is a 16 volts
capacitor, with capacitance of 100 uF.

The other cap is 50 volts 20 uF. They are electrolytic caps, alco's.

Feel free to ask questions by email: pieter@haalditweghoeben.com and
remove haalditweg.

Regards,

Pieter (Netherlands)

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