Jvc hr-d470eg

[nomoresonys]

Re: Jvc hr-d470eg

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

https://cdn.badcaps-static.com/pdfs/...7602c937a7.pdf

Thank You.

Compare the data sheets of both.

[hugocarmo]

Re: Jvc hr-d470eg

Thank You again!!
From what I read, they doesn´t seem to be compatible.
Anyway, I just emailed donberg store asking if they can ship me only the photo interruptor.
Let me see what they answer...

Best regards,

Hugo do Carmo.

[R_J]

Re: Jvc hr-d470eg

The part number is GP3A21, 0N1317 may be the same

After a closer look the ON1317 is only has a 2 lead detector.
The Omron EE-SX398/498 detector element should work, you would need to remove and replace the detector as the enclosure is different

[hugocarmo]

Re: Jvc hr-d470eg

After a closer look the ON1317 is only has a 2 lead detector.
The Omron EE-SX398/498 detector element should work, you would need to remove and replace the detector as the enclosure is different

Hi R_J.
Yes, because I saw the detector has 3 leads, I thought it could work.
I´ll wait from donberg answer and if they don´t send me I´ll buy this and try to replace the detector...

Best regards,

Hugo do Carmo.

[nomoresonys]

Re: Jvc hr-d470eg

https://www.serigo.eu/components/opt...e/vp-0296.html

[nomoresonys]

Re: Jvc hr-d470eg

https://kronos.hr/foto-modul/8846-pu-60271.html

[nomoresonys]

Re: Jvc hr-d470eg

https://electronic-center.hr/senzor-pu-60271.html

[hugocarmo]

Re: Jvc hr-d470eg

https://electronic-center.hr/senzor-pu-60271.html

Hi nomoresonys.
It´s been a while that I don´t post any update on this topic, but it was because I screw the FFC cables wich connect the display board to the chassis, and luckely found ones that were the same pitch and pins on aliexpress, so now I can say that I have my VCR all 100% fixed.
I bought the sensor on serigo store, but they never shipped or even sent me instructions how to pay for it, they say in the site, that after the buy they mail us the payment instructions, but never received any mail from them, even after contacted them through mail, still no answer...
I replaced all the micro switches from the display board too, because pressing play, sometimes it started rewinding, after replacement, hell yeah!!
I have in my home another recover project, was my first one, a JVC HR-D530E, a difficult one, it´s a spagetti inside!! But the reel sensor is identic, so I replaced it from the D530E, and after that, started to work like a swiss clock!!
The image is great, but the sound!! After replacing all caps!! Wow!!
I want to thank you all that helped me, sincerelly! It´s good to have comunities like this!!
I´m going to post pics from the finished project!!

[nomoresonys]

Re: Jvc hr-d470eg

Glad to hear its fixed. I have not dealt with serigo, from seeing your problem with them, they don't quite seem legitimate.

[hugocarmo]

Re: Jvc hr-d470eg

Now I have another project lol!!
I bought an Thomson SV1300N S-VHS recorder wich is a rebrand of a JVC HR-S4700.
It didn´t worked at all, I managed to get the service manual, I disassembled it, all boards, took note on all capacitor values, from PSU through backup capacitor, and replaced all of the electrolytic too like the past project, I don´t know if someone knows it in here I doubt, because it was a problem on some JVC models, the vertical board on the sound pcb has 4 smd capacitors that leak, I replaced them too.
After all the desolder and solder, the VCR came to life again, The sound again is amazing, through "simulate" or Front AV, even from tuner after tuning channels from my cable provider...
The problem is the VCR mechanism... It´s timed, I saw tutorials, I have the hole marks all lined up, even ordered a plate assy PQ44581B because some tooth were a bit worned, but the symptoms remains.
It loads the tape, start to pull the tape to the drum, the drum spins and then stops, the reels hickups and stops, the tape then looses, and It struglles to eject, everytime I press eject button, tries to load the tape, again and again, the only way to eject is to power off, and then press the eject button, it ejects, but the tape gets tangled inside...
I´ll post a video of what I´m saying...
I think that the capstan is good because when I touch some pins in the mechanis board with my fingers it spins, but uncontroll...
I´ll post video too...
Maybe someone had this problem before with a similar model...

https://vimeo.com/871297329?share=copy
https://vimeo.com/871298066?share=copy
https://streamable.com/mw2rg7

[nomoresonys]

Re: Jvc hr-d470eg

Could be idler mechanism, maybe pinch roller, is capstan turning freely? a bad belt could do it too if equipped. I just had a similar problem on an old ge, it would not load fully or bring the tape back to the cassette so when ejected tape was outside of cassette, I think they sit not played for extended periods of time and get sluggish and stuck, I cleaned the heads and the usual things there, re-greased the arm tracks, made sure the idler was not stuck, made sure the capstan moved freely. I put a tape in and it was indeed sluggish at first, then the more I hit play, rewind, ff, pause etc. the better it acted, now it's fine. I think just letting them sit without them ever playing is one of the worse things for them.

[hugocarmo]

Re: Jvc hr-d470eg

Could be idler mechanism, maybe pinch roller, is capstan turning freely? a bad belt could do it too if equipped. I just had a similar problem on an old ge, it would not load fully or bring the tape back to the cassette so when ejected tape was outside of cassette, I think they sit not played for extended periods of time and get sluggish and stuck, I cleaned the heads and the usual things there, re-greased the arm tracks, made sure the idler was not stuck, made sure the capstan moved freely. I put a tape in and it was indeed sluggish at first, then the more I hit play, rewind, ff, pause etc. the better it acted, now it's fine. I think just letting them sit without them ever playing is one of the worse things for them.

Once again nomoresonys, thank You, I only could upload the videos in this second! I cleaned, regreased, reoiled all of the mechanism parts, pinch roller is as good as new, capstain, moves freely, I disassembled it completelly, clutch, removed, disassembled too, and greased with lithium grease on the parts that can be greased, the felt was impecable! The tape guides were both off, if you know what I mean, they are secured by two plastic pieces and two brass parts, they easy fall appart, glued them too...
You´re right nomoresonys!
The more you use them, better they perform!! Sitting they get old and sad!!

[nomoresonys]

Re: Jvc hr-d470eg

You think the mode switch could be dirtied up, oxidized?

[hugocarmo]

Re: Jvc hr-d470eg

You think the mode switch could be dirtied up, oxidized?

I forgot to mention that.
Was one of the first things I did was dessolder the mode switch, opened it and cleaned it, it was very dirty indeed.

[nomoresonys]

Re: Jvc hr-d470eg

It's a head scratcher, lots of times it's this but you probably already went thru it, guess it could be a weak capstan motor?:

The most common cause of a VCR eating tapes is a dirty/worn idler tire
preventing the takeup reel from turning. The idler tire transfers motor
power to the appropriate reel hub. If dirty, worn, dried out, glazed, cracked,
or otherwise deteriorated, it will slip and cause the takeup reel (in
play mode) to stop turning at some point. Hopefully, the microcomputer
senses this and tries to wind the tape back into the cassette. But,
you guessed it, this requires the idler tire so you end up with a mess
of tape inside the machine. When you go to eject, you may get the cassette
with a tape loop hanging out.