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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

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Old 12th Aug 2023, 12:58 am   #1
hugocarmo
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Default JVC HR-D470EG video recorder.

Hi everyone.
I bought this vcr, I don´t know if you are like me, but I´ve never heard of a vcr with a side loading mechanism...
It was working, but the only problem was that as I loaded the tape, it started playing and a second after stopped, FF an RW equal.
I have seen some youtube videos that showed that maybe was the reel sensor, the only difference was that mine, changed the counter from 0000 to 0001 or 0002, so I was not convinced that it was the problem... Dispite that, I connected my bluetooth receiver through rca cables to input, and I only had left channel in stereo, only in mono I had both channels, so I decided to disassembly it, download the service manual, and order all electrolytic capacitors for all boards, including PSU, in the hope to have a 80´s fantastic engeneering device for mora 40 years or so...
I took pictures of all boards and connections, but after all caps replaced, I swapped power transistor plug "CN6" to "CN5", it has the same pin count so I stupidlly wrong connected it, when I plugged it to mains, the "Fuse2" burned all of the sunned, then I connected the mains to my serial bulb short protector and replaced the fuse, but everytime i turn the mains on, the fuse blowed, until I figure out that the plugs were connected wrong.
My question is... After connecting all right, I measure voltages in PSU and none look like in the service manual.
I replaced again all electrolytics in th PSU, but still the same.
I´ll attach all the service manual I have and pics and video from my device.

https://drive.google.com/file/d/1oeP...usp=drive_link

https://drive.google.com/file/d/1Zgj...usp=drive_link

https://drive.google.com/file/d/1437...usp=drive_link

Thank You all,

Hugo.
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Old 12th Aug 2023, 7:07 am   #2
its ur aerial
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Default Re: Jvc hr-d470eg

Hugo,
These were quite rear, certainly in the UK at least.
I have only ever seen two of these, the original fault was probably just the loading Belt slipping a fairly common fault.
I fear now you have multiple component failure in the power supply, which will most likely be a long job, I would suggest doing "cold" resistance checks on all the semiconductors working back from the Bridge Rectifier. Don't get too involved in changing cap`s at this stage. Good luck
Ken G6HZG.
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Old 17th Aug 2023, 2:06 pm   #3
hugocarmo
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Default Re: JVC HR-D470EG video recorder.

Hi its_ur_aerial.

Thank You for your answer.
Just figure it out! You were right, it was a fuse resistor on PSU (10ohm 2W) that was open, after I swapped "CN6" to "CN5" fuse 2 burned and the resistor too.
Thank God! That way I didn´t frie any important component in any other board.
So after all caps replaced, and the resistor, it came to life again and all it´s working great, great hi-fi sound, tested with audio in from bluetooth and my headphones.
The problem I still have is the reel sensor, it´s bad.
I´m searching for it on internet but so far I couldn´t find in any store who ships to Portugal, or if it does, the shippment and import taxes are too high!
I´ll keep searching

Thank You!!

Hugo.
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Old 17th Aug 2023, 4:00 pm   #4
hugocarmo
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Default Re: JVC HR-D470EG video recorder.

Could this one work like the original one?
It has 5 pins too...

https://storage.googleapis.com/mause...s/096-3966.pdf

Thank You.
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