Thankyou, great demonstration and explanation. It must of been wonderful back in the day coming up with solutions to ensure correct tape flow in a VCR.
This type of mechanism is in my experience generally very reliable. It is called "Sanyo VC mechanism". I like the clutch on this, works very well. Even sticky tapes have plenty of torgue. What I cannot play on Panasonic's K or Z mechanisms, I can almost always play on this VC mechanism. There are too many plastic parts in this but as of yet nothing broke.
I love your videos, they've been very helpful in diagnosing my old RCA top loaders. If the tension regulator (the strip with the felt) breaks, is there any salvaging other than getting a replacement part? Are they common enough amongst vcrs that you can rip one from a similar (ish) model? EDIT: Never mind, saw you answered the exact same question in another comment, looks like you can!
Ugh, I know this problem; dealt with it on a few Sanyo and Fisher models of the era. BTW, what would be most interesting is seeing a repair job on a 1980s model Fisher, especially models from the early-mid 1980s. You know, the Fisher VCRs that used what I would consider to be a kind of poorly designed Rube Goldberg contraption for the idler mechanism, complete with a dinky idler tire that wears out faster than idler tires used in their competitors...
I have a new problem related to backtension in my VCR. The arm is definitely moving into place, but the picture is rolling violently. If I apply slight pressure to the arm, the picture stabilizes and plays correctly, only to go back to the rolling picture the second I let go. Maybe it's not quite moving into place? I can't see anything obviously wrong with it; certainly nothing popped out or snapped!
Just got a similar problem but it's the FF spool brake. It started and got worse as I watched, checking for other stuff with the case open. The playback all seemed ok, but after a FF there was a slack loop ahead, and if it was long enough the tape would be ejected, snagging the tape. How can I spoof the VCR to going into play mode with no cassette inserted? The old method of shrouding the centre light doesn't seem to work. I tried with a cassette with no tape in it, and it just loaded to the deck floor, then reversed and ejected, without the lacing arms moving forward, no improvement on just defeating the side latches an moving the carriage forward by hand. The REW brake seems ok so far. I managed to check a VHS tape by FF fully, then checking by using REW moves only. The 'review' FF & REW braking seems ok, just the full FF brake is failing.
I have a Samsung DVD-VR375 with a back tension arm issue where it moves back and forth quickly. I have basic knowledge of VCR's, but I don't think this is normal. Also, I am having some tracking issues where the video will appear to be skipping over itself. Is this because of the back tension arm issue? If so, how can I fix it? Thanks.
So the little felt pad is supposed to be glued in place to the copper string, the more you know. (bugger is loose in there, frustrating me to slide it back in) Let's get the glue out then!
I was wondering what that copper strip about an eighth of an inch wide wrapped around the supply reel was for. You know, the one with the felt backing?
we used to have this same vcr, along with a cheap emerson DVD/VCR combo, my dad threw away the sanyo which worked perfectly freaking fine, and now all we have left is the cheap ass emerson combo... ugh my dad makes dumb mistakes, he dont care anyways lol
I notice that you use a variac transformer on your bench, what size is it and how do you use it as an isolation transformer? Do you have to change it someway to become an isolation transformer?
The variac is actually plugged into a 1000 watt isolation transformer mounted under the bench. A variac itself does not provide any isolation at all. All isolation is done by a seperate 1:1 transformer. The variac is used when working on power supplies so I can raise and lower the voltage to find faults in regulation circuits.
I've got a Toshiba M-9485 that wraps tape around the head and pinch roller. I found that when I put my finger on the tape and get the back tension just right it plays for a bit. I adjusted the band as far as it'll go, but the band is like a wet noodle after 20 years. I can't get replacement parts for it. Is there a way to jerry rig a new tension band out of thin metal and felt etc?
I take it that one uses a plastic band? You should be able to make one out of a thin copper band. That is what the old machines had them made out of. Copper and a felt strip glued to it.
Thanks! Yes, it looks like copper with felt glued to one side. I maxed out the tension setting and pushed it into a new position, that seems to let the tape play. 27 year old machine and still works, amazing. Japanese made stuff from that era really did last.
@@12voltvids Hi my JVC HR-S9500 will not accept or thread a tape what could be causing the issue. if a tape goes in it goes in incorrectly and shuts down.
@@mercadovideos-vitorjr5180 Dude. Take your meds. Read the title of the video then read my comment. Once you're done with that quit being an oversensitive CZcams police pussy.
Thankyou, great demonstration and explanation.
It must of been wonderful back in the day coming up with solutions to ensure correct tape flow in a VCR.
Moneymaker back in the day.
This type of mechanism is in my experience generally very reliable. It is called "Sanyo VC mechanism". I like the clutch on this, works very well. Even sticky tapes have plenty of torgue. What I cannot play on Panasonic's K or Z mechanisms, I can almost always play on this VC mechanism. There are too many plastic parts in this but as of yet nothing broke.
I love your videos, they've been very helpful in diagnosing my old RCA top loaders. If the tension regulator (the strip with the felt) breaks, is there any salvaging other than getting a replacement part? Are they common enough amongst vcrs that you can rip one from a similar (ish) model? EDIT: Never mind, saw you answered the exact same question in another comment, looks like you can!
Glue it back together. The felt pad is easy to re-attach.
@@12voltvids the copper strip itself ripped! It broke near a perforation if I remember correctly.
Ugh, I know this problem; dealt with it on a few Sanyo and Fisher models of the era.
BTW, what would be most interesting is seeing a repair job on a 1980s model Fisher, especially models from the early-mid 1980s.
You know, the Fisher VCRs that used what I would consider to be a kind of poorly designed Rube Goldberg contraption for the idler mechanism, complete with a dinky idler tire that wears out faster than idler tires used in their competitors...
I have a new problem related to backtension in my VCR. The arm is definitely moving into place, but the picture is rolling violently. If I apply slight pressure to the arm, the picture stabilizes and plays correctly, only to go back to the rolling picture the second I let go. Maybe it's not quite moving into place? I can't see anything obviously wrong with it; certainly nothing popped out or snapped!
Heads could be worn. Increasing tension brings the signal back.
Just got a similar problem but it's the FF spool brake. It started and got worse as I watched, checking for other stuff with the case open. The playback all seemed ok, but after a FF there was a slack loop ahead, and if it was long enough the tape would be ejected, snagging the tape. How can I spoof the VCR to going into play mode with no cassette inserted? The old method of shrouding the centre light doesn't seem to work. I tried with a cassette with no tape in it, and it just loaded to the deck floor, then reversed and ejected, without the lacing arms moving forward, no improvement on just defeating the side latches an moving the carriage forward by hand. The REW brake seems ok so far. I managed to check a VHS tape by FF fully, then checking by using REW moves only. The 'review' FF & REW braking seems ok, just the full FF brake is failing.
What brand/model vcr is it?
What would cause the tape to slack on the pinch roller during rewinding, less severely during normal playback, but not at all during fast forwarding?
I have a Samsung DVD-VR375 with a back tension arm issue where it moves back and forth quickly. I have basic knowledge of VCR's, but I don't think this is normal. Also, I am having some tracking issues where the video will appear to be skipping over itself. Is this because of the back tension arm issue? If so, how can I fix it? Thanks.
great video!
So the little felt pad is supposed to be glued in place to the copper string, the more you know. (bugger is loose in there, frustrating me to slide it back in)
Let's get the glue out then!
I was wondering what that copper strip about an eighth of an inch wide wrapped around the supply reel was for. You know, the one with the felt backing?
That is the tension regulator to control the tape back tension on the video head.
@@12voltvids Ah, so that's what it is! Thanks.
we used to have this same vcr, along with a cheap emerson DVD/VCR combo, my dad threw away the sanyo which worked perfectly freaking fine, and now all we have left is the cheap ass emerson combo... ugh my dad makes dumb mistakes, he dont care anyways lol
I notice that you use a variac transformer on your bench, what size is it and how do you use it as an isolation transformer? Do you have to change it someway to become an isolation transformer?
The variac is actually plugged into a 1000 watt isolation transformer mounted under the bench.
A variac itself does not provide any isolation at all. All isolation is done by a seperate 1:1 transformer.
The variac is used when working on power supplies so I can raise and lower the voltage to find faults in regulation circuits.
12voltvids Thank you
my vcr has a bad that is not connected to anything on one side spring is working. tape rides up on the right side
a band that is not connected but spring is providing tension but tape is riding up in the same place as in your video what is the difference
I've got a Toshiba M-9485 that wraps tape around the head and pinch roller. I found that when I put my finger on the tape and get the back tension just right it plays for a bit. I adjusted the band as far as it'll go, but the band is like a wet noodle after 20 years. I can't get replacement parts for it. Is there a way to jerry rig a new tension band out of thin metal and felt etc?
I take it that one uses a plastic band? You should be able to make one out of a thin copper band. That is what the old machines had them made out of. Copper and a felt strip glued to it.
Thanks! Yes, it looks like copper with felt glued to one side. I maxed out the tension setting and pushed it into a new position, that seems to let the tape play. 27 year old machine and still works, amazing. Japanese made stuff from that era really did last.
Yes the old Japanese made VCRs were built like tanks, and lasted a long time. I have a few that are as old as the hills and still work.
@@12voltvids Hi my JVC HR-S9500 will not accept or thread a tape what could be causing the issue. if a tape goes in it goes in incorrectly and shuts down.
You know what I was thinking? I was thinking VHS backtension brake failure, how to fix. Seriously, that's what I thought.
@@mercadovideos-vitorjr5180
I hope you are being as sarcastic as I was. If not, you need help.
@@mercadovideos-vitorjr5180
Dude. Take your meds. Read the title of the video then read my comment. Once you're done with that quit being an oversensitive CZcams police pussy.