Thanks so much!!! Was about to throw out my old 1995 Panasonic VCR and you saved it! I have so many tapes but hadnt used it in years. I had purchased a head cleaning tape from Amazon and tapes would still not play clearly. I searched and found you and followed your easy instructions and now can enjoy our tapes and old home movies again!
I believe Matsushita was the only electronics company to use amorphous video heads in their VHS devices. The picture quality, even on the VHS-C camcorders certainly stands out against many high-end units from yesteryear. I'm certain that AKAI also used a special video head in some of their VHS machines, too. I think they were called GX, or Crystal? Something along that line. ...I still hold my 1977 PV-1000 closest to my heart, regardless.
I got this vcr in July of this year along with 14 vhs movies but one of them was way too moldy to keep. It came with a panasonic remote but it had corroded batteries that expired back in December 2018, and it was a guy who had ALL KINDS of vhs tapes like SHELVES AND SHELVES of them. It was in Illinois but i live in Wisconsin. It may be the same model but it was manufactured on Nov 12 2005. Some of these late panasonics according to a few ebay listings i saw were from EARLY 2006!!! Not kidding.
I have the Panasonic V4524S model 4-head Omnivision VHS VCR. The last time I checked which was about a year ago…. It was working flawlessly. I plan on bringing some VHS tapes to check it to make sure it is running fine.
My decade old vcr finally kicked the dust when I took it apart it had a blown fuse and every fuse I tried never worked now it is the centerpiece of my bookshelf
Thanks for that. My roller guides are stopping halfway up the tracks and then the tape gets spat out, have you any idea whats causing it, i only just bought the vcr off eBay and it was tested and working fine before it was sent out to me. Ive a similar panasonic model. thanks.
I've seen simpler mechanisms... Kinda. My Panasonic nv-l25 has a G- mech that uses a solenoid and a single capstan motor for all functions, including eject, ff,rw,loading etc. The only other one is the drum motor. Wonder if you could make a mechanism with just the drum motor through some reduction gearbox
That is actually one of the most complex mechanisms. Solenoid clutch and planetary gear set to split power to different mechanisms. They are slow, clunky and very prone to break down.
Have a similar Panasonic, nv-vp60. Combo dvd unit. The tape will drop into place no problem and begin takeup but wont thread tape onto head, then it just ejects tape. Tried contact cleaning mode switch, and allignment looks good. Can turn main gear by hand and mechanism works. Any ideas?
@12voltvids thanks for responding. I checked the IR emitter and can see its emitting light using my phone camera. Checked the IR receivers either side and they check ok on multimeter, basically diodes. Cleaned the IR light guide as well. Didnt check the supply and take up optical sensors. Didnt think its the take up sensor as it doesnt even start to play as it hasnt threaded the tape yet.
@hellominions1604 they are photo transistors and you don't test with diode meter. You test with volt meter. Voltage across the photo trabaiator should be about .6v when exposed to the or light from the ir led and go to about 5 volts when you block the light. Your phone camera might be able to see the light bit if it's not strong enough it won't register with end sensors which many machines use as a way to detect that the tape is in place ready to load.
Success. It was the mode switch in the end. I popped it open, cleaned the tiny feather contacts, tried, no go. Then bent each contact down a very small amount so the were closer to their counterpart/base plate. Put it back together, and it works perfectly. Many thanks to you and your amazing videos, gave me confidence to fix this VCR.
The correct model number is PV-V4525S, and this was the final and last Panasonic VCR model ever. This model sold for three years, and Panasonic discontinued all VCR production by 2008.
Well the model I have is the PV-V4535S-K from 2005, sold in Canada. I didn't say this was the LAST model, I said it was "probably one of the last models made" by Panasonic. This was a Canadian model, the model number in other countries may be different.
Now I want to tear apart a VCR. I have a bunch, but they all work reliably. I had a couple of Panasony hi end and pro VCRs, and beta too, that I tore into before trashing, fascinating indeed, most logical. Live long and prosper! The Donold (grump)
EastAngliaUK In the factory the machine was put together by robots. That is why the alignment holes. Pins stick through from the back side to hold pleces in place as the parts placer pops everything together.I have, on Beta a video shot at one of the Japanese assembly plants back in the 80's. It is quite fascinating to see how these units were made, even back then.
+Donald Ellett Design wise I think the new electronics are great. The problem with modern stuff is they build much of it using the cheapest materials they can get away with because they want to hit a specific selling cost.Older gear was designed well, and used over engineered components and parts. Say for example a power supply filter. For a 12 volt supply it was common to find capacitors rated 25 volts in them. Today they would use 16 volts. Sure, the 16 volt rating is above the working voltage, but is running much closer to the maximum rating. Guess which one is going to last longer? In older VCRs they use solid cast aluminum, or steel parts. Then they changed to injection moulded plastic. Guess which one is going to wear better. They could build stuff to last, but it is all economics right. They don't want it to last. They want you buying a new TV every 3 years, not every 20 years as in the past. If something lasts 20 years they won't sell as many.Same goes for these LED light bulbs. If you believe they will last you 20 years, I have lake front property in the desert for you.Most of the LED bulbs inmy house are burning out after only 3 years.
Awesome video ! I wonder why they made the case out of metal just too put cheap parts in it ....lol doesn't make any sense :) anyways I like the alignment you did on it. Thank you
When you was a kid, did you take clocks apart... then put them back together, and have them work? Um able to tear them apart, but... oh well, so far so good. It's fun to tear things down before tossing them in the trash. I like to get DirecTV TIVO receiver boxes, you get a hard drive, fan, and SPS. I often see those at junk stores for a few bucks, usually the HDD works. Don
***** When I was 6 or 7 I used to go hang out at the neighbours house. Old Mr Mallet was the community TV repairman and he worked out of his garage. I used to be amazed that he didn't get electrocuted, as every so often he would let out a scream and the air would turn blue with the 4 letter words that followed whenever he would get careless and a 480 volt B+ supply would bite when he was working on a chassis. The old tube sets would hold a big time charge for quite awhile after the power was removed. I started tekaing stuff apart shortly after that, and my parents had to pay Mr Mallet to put it back together! He was a funny old character, and his wife had this really nice garden that she grew stuff in that I had never seen. She told me she was growing a special type of plant called a Marijuana plant, and that she would bake the leaves into her special brownies and cookies, and it would relive her arthritis pain. By the time I was 12 I was building my own radio sets. By the time I was 15 I had a job working as an apprentice at a local shop, and received my full TQ ticket by the time I as 20. I worked in the industry as a professional Radio/TV/Video tech for 22 years, and then could see the light at the end of the tunnel, and abruptly left 12 years ago, and retrained for a totally different industry. Now, through these series of videos, I am giving back what I learned in all those years in consumer electronics repair.
I sure appreciate you. When I was a crazy kid, I'd ride my bike around the "hood". There was this ham guy around the block with towers and stuff on them. I stopped by to say howdydoo one day when he was doing something in his Ford Falcon van. He showed my his station, WOW! He had a huge linear in his basement, and told me about transmitters. I never forgot that air cooled commercial transmitter tube that. he showed me, from a local broadcast station. And mom got me a set of Concord walkie talkies from Olson Electronics that Christmas, that's how I first got the bug. He told me to pick radios and TV sets off the curb with my Radio Flyer, LOL. Later we got rekee players and reelers. But I can't remember when I got my first zap of many. Don
***** We have all been zapped. The local TV guy that I used to hang around at was also a ham radio operator, and had an old Collins AM transmitter modified to operate on 80 meters. When he fired that thing up, all our radios and telephones went crazy.I also don't remember all the burns and zaps. I do remember a few though, an operating commercial microwave open put me on my ass when insulation on a tool failed, and the high voltage lead on a Sony KV27XBR bit me once. The big red HV resistor that had the static convergence control on it was cracked, and when I went to adjust the convergence, lightning leapt out and bit me good.
HA! my first HV was dad touching a screw driver to the horizontal tube on the old Admiral when he pulled tubes to take to the drug store tester, he told me that he had to zap the picture tube??? He told me to KEEP YOUR HANDS OUT OF THERE, OR YOU'LL GET A BIG SHOCK! I was CRT phobic for many years after that.
***** We used to call the 2nd anode lead and HV cap the "Cobra"Well, it kind of looks like a cobra when it is not attached to the CRT, and like a cobra that sucker will bite without warning of you get too close to it.
+Donald Ellett Everything is burring in a single chip.I remember reading an article in popular science in the mid 70's when the first CCD image sensor was created. It was very crude something like 100x100 pixels, but it was the start. CCD itself is not the image sensor. CCD stands for charge coupled device, and it is basically a device where a charge can be transferred between registers for storage or read out inside an IC. It was an early form of bubble memory. My first hands on with a CCD was a device I build called a CCD phaser. It took an audio signal, digitized it to 8 bit audio. Sent the audio through a CCD device, where it could be delayed and read back out, and converted back to analog audio, and mixed back in to the incoming audio. This cause an Echo, or phase shift and was a great effects box for a guitar player. I built that in my grade 11 electronics class, and they proceeded to build a B/W TV camera for grade 12 using a vidicon tube. I remember thinking some day this will all be done on a chip. It wasn't long after that that Sony made that happen with the CCDV8 video camera.
Thanks so much!!! Was about to throw out my old 1995 Panasonic VCR and you saved it! I have so many tapes but hadnt used it in years. I had purchased a head cleaning tape from Amazon and tapes would still not play clearly. I searched and found you and followed your easy instructions and now can enjoy our tapes and old home movies again!
I believe Matsushita was the only electronics company to use amorphous video heads in their VHS devices. The picture quality, even on the VHS-C camcorders certainly stands out against many high-end units from yesteryear. I'm certain that AKAI also used a special video head in some of their VHS machines, too. I think they were called GX, or Crystal? Something along that line.
...I still hold my 1977 PV-1000 closest to my heart, regardless.
I got this vcr in July of this year along with 14 vhs movies but one of them was way too moldy to keep. It came with a panasonic remote but it had corroded batteries that expired back in December 2018, and it was a guy who had ALL KINDS of vhs tapes like SHELVES AND SHELVES of them. It was in Illinois but i live in Wisconsin. It may be the same model but it was manufactured on Nov 12 2005. Some of these late panasonics according to a few ebay listings i saw were from EARLY 2006!!! Not kidding.
You made my day👍👍👍Just got a Panasonic VCR with the same mechanism, and couldn't find any info regarding the gear timing.
I have the Panasonic V4524S model 4-head Omnivision VHS VCR. The last time I checked which was about a year ago…. It was working flawlessly. I plan on bringing some VHS tapes to check it to make sure it is running fine.
as pessoas ai, consertam muitos equipamentos ainda?
Thank you very much for this wonderful work :))))
I have a Panasonic pv-430d, it suddenly started shooting in black and white. Do you know what component may have gone haywire?
pls. what's problem ni power supply replaced condensir replace but no out put
Iwant to know about electric circut after the ic STR
My decade old vcr finally kicked the dust when I took it apart it had a blown fuse and every fuse I tried never worked now it is the centerpiece of my bookshelf
Something in the power supply must be overamping it.
Just bridge the fuse and check to see which component explodes. Then replace it.
Thanks for that. My roller guides are stopping halfway up the tracks and then the tape gets spat out, have you any idea whats causing it, i only just bought the vcr off eBay and it was tested and working fine before it was sent out to me. Ive a similar panasonic model. thanks.
I've seen simpler mechanisms... Kinda. My Panasonic nv-l25 has a G- mech that uses a solenoid and a single capstan motor for all functions, including eject, ff,rw,loading etc. The only other one is the drum motor. Wonder if you could make a mechanism with just the drum motor through some reduction gearbox
Early betamax units had 1 motor and belt drive for capstan, drum, reels and loading mechanism control.
That is actually one of the most complex mechanisms. Solenoid clutch and planetary gear set to split power to different mechanisms. They are slow, clunky and very prone to break down.
how to guide roller tear down?
sad to say but - that transport is an engineering marvel !!
Have a similar Panasonic, nv-vp60. Combo dvd unit. The tape will drop into place no problem and begin takeup but wont thread tape onto head, then it just ejects tape. Tried contact cleaning mode switch, and allignment looks good. Can turn main gear by hand and mechanism works. Any ideas?
And sensors?
@12voltvids thanks for responding. I checked the IR emitter and can see its emitting light using my phone camera. Checked the IR receivers either side and they check ok on multimeter, basically diodes. Cleaned the IR light guide as well. Didnt check the supply and take up optical sensors. Didnt think its the take up sensor as it doesnt even start to play as it hasnt threaded the tape yet.
@hellominions1604 they are photo transistors and you don't test with diode meter. You test with volt meter. Voltage across the photo trabaiator should be about .6v when exposed to the or light from the ir led and go to about 5 volts when you block the light. Your phone camera might be able to see the light bit if it's not strong enough it won't register with end sensors which many machines use as a way to detect that the tape is in place ready to load.
@@12voltvids Thanks, will check again. Mine only have two pins, and they are labelled + and - on the silk screen. Easy enough to test with voltmeter.
Success. It was the mode switch in the end. I popped it open, cleaned the tiny feather contacts, tried, no go. Then bent each contact down a very small amount so the were closer to their counterpart/base plate. Put it back together, and it works perfectly. Many thanks to you and your amazing videos, gave me confidence to fix this VCR.
Looks like an OK back up VCR I not watch the hole video so don't know if you put back together.
EastAngliaUK Yes it did go back together, and it works perfect.
The correct model number is PV-V4525S, and this was the final and last Panasonic VCR model ever. This model sold for three years, and Panasonic discontinued all VCR production by 2008.
Well the model I have is the PV-V4535S-K from 2005, sold in Canada. I didn't say this was the LAST model, I said it was "probably one of the last models made" by Panasonic. This was a Canadian model, the model number in other countries may be different.
Now I want to tear apart a VCR. I have a bunch, but they all work reliably.
I had a couple of Panasony hi end and pro VCRs, and beta too, that I tore into before trashing, fascinating indeed, most logical.
Live long and prosper! The Donold (grump)
Who remembers going to watch a movie and then you have to rewind the tape because no one else will
I also wonder did someone put all that together in the factory when it was made?
EastAngliaUK In the factory the machine was put together by robots. That is why the alignment holes. Pins stick through from the back side to hold pleces in place as the parts placer pops everything together.I have, on Beta a video shot at one of the Japanese assembly plants back in the 80's. It is quite fascinating to see how these units were made, even back then.
Pls can u explain the main board my vcr does not work
It's broken.
why is the video so quiet ??
Do you think the mechanical/electrical engineers are doing a better job today or a worse job!!! That design the electronics today???
+Donald Ellett Design wise I think the new electronics are great. The problem with modern stuff is they build much of it using the cheapest materials they can get away with because they want to hit a specific selling cost.Older gear was designed well, and used over engineered components and parts. Say for example a power supply filter. For a 12 volt supply it was common to find capacitors rated 25 volts in them. Today they would use 16 volts. Sure, the 16 volt rating is above the working voltage, but is running much closer to the maximum rating. Guess which one is going to last longer? In older VCRs they use solid cast aluminum, or steel parts. Then they changed to injection moulded plastic. Guess which one is going to wear better. They could build stuff to last, but it is all economics right. They don't want it to last. They want you buying a new TV every 3 years, not every 20 years as in the past. If something lasts 20 years they won't sell as many.Same goes for these LED light bulbs. If you believe they will last you 20 years, I have lake front property in the desert for you.Most of the LED bulbs inmy house are burning out after only 3 years.
Well this mechanism is a lot less complicated than the G deck or the Mitsubishi HS-U82 mechanism.
nice brother but
l.15 v.c.r. powar supply fuse is of s.t.r ok but on out put supply
Awesome video ! I wonder why they made the case out of metal just too put cheap parts in it ....lol doesn't make any sense :) anyways I like the alignment you did on it.
Thank you
"Moading Loader" @ 12.00 - funny . it's correct but sounds funny at first
When you was a kid, did you take clocks apart...
then put them back together, and have them work?
Um able to tear them apart, but... oh well, so far so good.
It's fun to tear things down before tossing them in the trash.
I like to get DirecTV TIVO receiver boxes, you get a hard drive, fan, and SPS.
I often see those at junk stores for a few bucks, usually the HDD works.
Don
***** When I was 6 or 7 I used to go hang out at the neighbours house. Old Mr Mallet was the community TV repairman and he worked out of his garage. I used to be amazed that he didn't get electrocuted, as every so often he would let out a scream and the air would turn blue with the 4 letter words that followed whenever he would get careless and a 480 volt B+ supply would bite when he was working on a chassis. The old tube sets would hold a big time charge for quite awhile after the power was removed. I started tekaing stuff apart shortly after that, and my parents had to pay Mr Mallet to put it back together! He was a funny old character, and his wife had this really nice garden that she grew stuff in that I had never seen. She told me she was growing a special type of plant called a Marijuana plant, and that she would bake the leaves into her special brownies and cookies, and it would relive her arthritis pain. By the time I was 12 I was building my own radio sets. By the time I was 15 I had a job working as an apprentice at a local shop, and received my full TQ ticket by the time I as 20. I worked in the industry as a professional Radio/TV/Video tech for 22 years, and then could see the light at the end of the tunnel, and abruptly left 12 years ago, and retrained for a totally different industry. Now, through these series of videos, I am giving back what I learned in all those years in consumer electronics repair.
I sure appreciate you. When I was a crazy kid, I'd ride my bike around the "hood". There was this ham guy around the block with towers and stuff on them. I stopped by to say howdydoo one day when he was doing something in his Ford Falcon van. He showed my his station, WOW! He had a huge linear in his basement, and told me about transmitters. I never forgot that air cooled commercial transmitter tube that. he showed me, from a local broadcast station. And mom got me a set of Concord walkie talkies from Olson Electronics that Christmas, that's how I first got the bug. He told me to pick radios and TV sets off the curb with my Radio Flyer, LOL. Later we got rekee players and reelers. But I can't remember when I got my first zap of many. Don
***** We have all been zapped. The local TV guy that I used to hang around at was also a ham radio operator, and had an old Collins AM transmitter modified to operate on 80 meters. When he fired that thing up, all our radios and telephones went crazy.I also don't remember all the burns and zaps. I do remember a few though, an operating commercial microwave open put me on my ass when insulation on a tool failed, and the high voltage lead on a Sony KV27XBR bit me once. The big red HV resistor that had the static convergence control on it was cracked, and when I went to adjust the convergence, lightning leapt out and bit me good.
HA! my first HV was dad touching a screw driver to the horizontal tube on the old Admiral when he pulled tubes to take to the drug store tester, he told me that he had to zap the picture tube??? He told me to KEEP YOUR HANDS OUT OF THERE, OR YOU'LL GET A BIG SHOCK! I was CRT phobic for many years after that.
***** We used to call the 2nd anode lead and HV cap the "Cobra"Well, it kind of looks like a cobra when it is not attached to the CRT, and like a cobra that sucker will bite without warning of you get too close to it.
Looks suspiciously similar to a Funai mechanism.
Am I the only one who treats old technology like the crown jewls of all my other devices
No I like old tech too. Especially any audio device with vacuum tubes in it, and
reel to reel tape
good one, thanks...
Panasonic=panaszkodik:)))
Ügyes a szaki:)
That board is not very complicated!!
+Donald Ellett Everything is burring in a single chip.I remember reading an article in popular science in the mid 70's when the first CCD image sensor was created. It was very crude something like 100x100 pixels, but it was the start. CCD itself is not the image sensor. CCD stands for charge coupled device, and it is basically a device where a charge can be transferred between registers for storage or read out inside an IC. It was an early form of bubble memory. My first hands on with a CCD was a device I build called a CCD phaser. It took an audio signal, digitized it to 8 bit audio. Sent the audio through a CCD device, where it could be delayed and read back out, and converted back to analog audio, and mixed back in to the incoming audio. This cause an Echo, or phase shift and was a great effects box for a guitar player. I built that in my grade 11 electronics class, and they proceeded to build a B/W TV camera for grade 12 using a vidicon tube. I remember thinking some day this will all be done on a chip. It wasn't long after that that Sony made that happen with the CCDV8 video camera.