VCR problems

E

electricked

Guest
Hi all,

I'm a beginner to electronics repair even though I have a little experience
with electronics theory and practicality.

Anyway, I have this Sansui VCR, model no.SNVR2005/A and it's causing me some
problems. When I turn it on, it's fine for about half a minute to a minute
and then the pictures messes up, starting at the most bottom, going bottom
half, and then the whole screen messes up. It goes like this for a about
10-20 seconds then it's gets back to normal. The messing up I'm talking
about is like stars/noise and horizontal lines. It does that based on time
and not on specific video tape segments so I'm pretty sure it's not the
video tape. I'm thinking it's the VCR heads (it's got 2 of those). When it
first started doing this the sound would go away together with the picture
messing up. I opened it up last night, and cleaned up the tape path, wait
for it to dry out, and plugged it back in. The sound is back to normal. It
doesn't go away anymore. The picture still gets messed up even though I
cleaned the 2 heads.

Any suggestions ideas as to what the problem could be and how it could be
fixed? Also how much will it cost to be fixed by a mechanic/DIY-er?

Any help is appreciated!

Thanks!

--Viktor
 
"electricked" <NO_EMALS_PLEASE> writes:

Hi all,

I'm a beginner to electronics repair even though I have a little experience
with electronics theory and practicality.

Anyway, I have this Sansui VCR, model no.SNVR2005/A and it's causing me some
problems. When I turn it on, it's fine for about half a minute to a minute
and then the pictures messes up, starting at the most bottom, going bottom
half, and then the whole screen messes up. It goes like this for a about
10-20 seconds then it's gets back to normal. The messing up I'm talking
about is like stars/noise and horizontal lines. It does that based on time
and not on specific video tape segments so I'm pretty sure it's not the
video tape. I'm thinking it's the VCR heads (it's got 2 of those). When it
first started doing this the sound would go away together with the picture
messing up. I opened it up last night, and cleaned up the tape path, wait
for it to dry out, and plugged it back in. The sound is back to normal. It
doesn't go away anymore. The picture still gets messed up even though I
cleaned the 2 heads.

Any suggestions ideas as to what the problem could be and how it could be
fixed? Also how much will it cost to be fixed by a mechanic/DIY-er?
Click to expand...
Start with a cleaning and inspection of the tape path. It isn't the
video heads if the picture starts out fine. You'll probably see that
the tape isn't staying snug up against the spinning heads. May be
deteriorated pinch roller.

See the VCR repair guide at the site below.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the feedback form on the S.E.R FAQ Web sites.
 
Like I said in the post. I did clean the tape path. I don't know if it's the
head or not but the heads don't look too good. They look darkened. The top
drum is dark and worned out around the head openings. The heads don't
protrued much at all if that makes any difference (I'm no expert). As far as
the pinch roller it seems like it can't be removed. What's the removing
procedure for it? How do I know if it's really the pinch roller?

I had given the video to a friend. Few years ago he returned it back to me
and it was in the condition it's in right now. It's been staying like this
since then (2-3 years) and I just got around it. Either I'll fix it and sell
it, or I'll take some electronics parts from it, but it's gotta go one way
or another because it's taking too much space.

Any other suggestions/ideas? How should I proceed from here? I tried looking
for some information on this specific VCR but couldn't find anything
(googling, etc).

Thanks!

--Viktor

"Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6wptcfu3ls.fsf@saul.cis.upenn.edu...
"electricked" <NO_EMALS_PLEASE> writes:

Hi all,

I'm a beginner to electronics repair even though I have a little
experience
with electronics theory and practicality.

Anyway, I have this Sansui VCR, model no.SNVR2005/A and it's causing me
some
problems. When I turn it on, it's fine for about half a minute to a
minute
and then the pictures messes up, starting at the most bottom, going
bottom
half, and then the whole screen messes up. It goes like this for a about
10-20 seconds then it's gets back to normal. The messing up I'm talking
about is like stars/noise and horizontal lines. It does that based on
time
and not on specific video tape segments so I'm pretty sure it's not the
video tape. I'm thinking it's the VCR heads (it's got 2 of those). When
it
first started doing this the sound would go away together with the
picture
messing up. I opened it up last night, and cleaned up the tape path,
wait
for it to dry out, and plugged it back in. The sound is back to normal.
It
doesn't go away anymore. The picture still gets messed up even though I
cleaned the 2 heads.

Any suggestions ideas as to what the problem could be and how it could
be
fixed? Also how much will it cost to be fixed by a mechanic/DIY-er?

Start with a cleaning and inspection of the tape path. It isn't the
video heads if the picture starts out fine. You'll probably see that
the tape isn't staying snug up against the spinning heads. May be
deteriorated pinch roller.

See the VCR repair guide at the site below.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work.
To
contact me, please use the feedback form on the S.E.R FAQ Web sites.
Click to expand...
 
"electricked" <no_emails_please> writes:

Like I said in the post. I did clean the tape path. I don't know if it's the
head or not but the heads don't look too good. They look darkened. The top
drum is dark and worned out around the head openings. The heads don't
protrued much at all if that makes any difference (I'm no expert). As far as
the pinch roller it seems like it can't be removed. What's the removing
procedure for it? How do I know if it's really the pinch roller?
Click to expand...
Depends on the VCR but you can inspect it in place. The surface should
not be hard and cracked. Clean it with alcohol - not too much black crud
should come off.

If it's a tape path problem, you should be able to observe the tape
wandering in sync with your video problem.

The fact that the video head cylinder is worn and dirty isn't helping but
still may not be the primary cause.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the feedback form on the S.E.R FAQ Web sites.



I had given the video to a friend. Few years ago he returned it back to me
and it was in the condition it's in right now. It's been staying like this
since then (2-3 years) and I just got around it. Either I'll fix it and sell
it, or I'll take some electronics parts from it, but it's gotta go one way
or another because it's taking too much space.

Any other suggestions/ideas? How should I proceed from here? I tried looking
for some information on this specific VCR but couldn't find anything
(googling, etc).

Thanks!

--Viktor

"Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6wptcfu3ls.fsf@saul.cis.upenn.edu...
"electricked" <NO_EMALS_PLEASE> writes:

Hi all,

I'm a beginner to electronics repair even though I have a little
experience
with electronics theory and practicality.

Anyway, I have this Sansui VCR, model no.SNVR2005/A and it's causing me
some
problems. When I turn it on, it's fine for about half a minute to a
minute
and then the pictures messes up, starting at the most bottom, going
bottom
half, and then the whole screen messes up. It goes like this for a about
10-20 seconds then it's gets back to normal. The messing up I'm talking
about is like stars/noise and horizontal lines. It does that based on
time
and not on specific video tape segments so I'm pretty sure it's not the
video tape. I'm thinking it's the VCR heads (it's got 2 of those). When
it
first started doing this the sound would go away together with the
picture
messing up. I opened it up last night, and cleaned up the tape path,
wait
for it to dry out, and plugged it back in. The sound is back to normal.
It
doesn't go away anymore. The picture still gets messed up even though I
cleaned the 2 heads.

Any suggestions ideas as to what the problem could be and how it could
be
fixed? Also how much will it cost to be fixed by a mechanic/DIY-er?

Start with a cleaning and inspection of the tape path. It isn't the
video heads if the picture starts out fine. You'll probably see that
the tape isn't staying snug up against the spinning heads. May be
deteriorated pinch roller.

See the VCR repair guide at the site below.
Click to expand...
 
"electricked" <NO_EMALS_PLEASE> wrote in message
news:JvKdnXmJKrWmua3dRVn-vA@comcast.com...
Hi all,

I'm a beginner to electronics repair even though I have a little
experience
with electronics theory and practicality.

Anyway, I have this Sansui VCR, model no.SNVR2005/A and it's causing me
some
problems. When I turn it on, it's fine for about half a minute to a minute
and then the pictures messes up, starting at the most bottom, going bottom
half, and then the whole screen messes up. It goes like this for a about
10-20 seconds then it's gets back to normal. The messing up I'm talking
about is like stars/noise and horizontal lines. It does that based on time
and not on specific video tape segments so I'm pretty sure it's not the
video tape. I'm thinking it's the VCR heads (it's got 2 of those). When it
first started doing this the sound would go away together with the picture
messing up. I opened it up last night, and cleaned up the tape path, wait
for it to dry out, and plugged it back in. The sound is back to normal. It
doesn't go away anymore. The picture still gets messed up even though I
cleaned the 2 heads.

Any suggestions ideas as to what the problem could be and how it could be
fixed? Also how much will it cost to be fixed by a mechanic/DIY-er?

Any help is appreciated!

Thanks!

--Viktor


You may be having a problem with the tracking. Clean the audio\control real
Click to expand...
good with some 409 followed by alcohol. It has to be squeaky clean.
 
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