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Search took 0.00 seconds. Search: Posts Made By: Tokyo_DIY
Forum: Video Hardware Repair 02-12-2024, 01:22 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Hi @hongan, many thanks for letting me know. ...

Hi @hongan,
many thanks for letting me know.
If I face the same issue with another machine I'll try re-soldering the joints.
Forum: Video Hardware Repair 08-06-2023, 08:08 PM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Many thanks, very nice post. It is too late for...

Many thanks, very nice post.
It is too late for my case, but I am sure other members will face the same issue.
Forum: Video Hardware Repair 09-16-2021, 04:42 AM
Replies: 3
Views: 652
Posted By Tokyo_DIY
Hello. The issue shown in Clip1 and Clip2 is...

Hello.
The issue shown in Clip1 and Clip2 is due to the fact that you are playing without the deck cover.
If the room is bright enough, some light reaches the sensors and prevents normal play....
Forum: Video Hardware Repair 09-04-2021, 12:11 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Hi. Have you been able to achieve some progress...

Hi. Have you been able to achieve some progress on this topic? Personally I am stuck:question:
Forum: Video Hardware Repair 08-30-2021, 08:59 PM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
For reference, this movie shows the vcr operation...

For reference, this movie shows the vcr operation in those sporadic cases when the eject happens regularly. Maybe it can be useful for comparison with the previous file 9403.
Forum: Video Hardware Repair 08-30-2021, 08:06 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Hello, this movie shows in detail what happens...

Hello,
this movie shows in detail what happens inside this JVC when the eject malfunctions.

I have checked the control cam and it is not broken nor damaged. Even substituted it, but nothing...
Forum: Video Hardware Repair 08-24-2021, 10:02 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Thank you for the comment. I will tear down...

Thank you for the comment.
I will tear down both mechanisms again in the following days and compare the status of the control gear (i.e. cam gear). I have a spare control gear from a trash deck, so...
Forum: Video Hardware Repair 08-24-2021, 05:35 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Independently on being in Mechanism Assembly Mode...

Independently on being in Mechanism Assembly Mode (i. e. full eject position) or not, I can always see the same difference all the time. The small anchor is in a different position for this deck....
Forum: Video Hardware Repair 08-23-2021, 04:11 PM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
The situation is like this: bad deck: ...

The situation is like this:

bad deck:
control cam in Mechanism Assembly Mode,
control plate misaligned by 2 mm
switch mode misaligned by 10 deg

good deck:
control cam in Mechanism Assembly...
Forum: Video Hardware Repair 08-22-2021, 08:17 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
>In your 1st post you have the motor doesn't stop...

>In your 1st post you have the motor doesn't stop When trying to eject.so is the belt slipping on the pulleys?

During the normal phase of the eject operation, until the cassette is completely...
Forum: Video Hardware Repair 08-21-2021, 08:41 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
This seems to happen randomly with all tapes.

This seems to happen randomly with all tapes.
Forum: Video Hardware Repair 08-21-2021, 08:06 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Actually the same problem with eject not...

Actually the same problem with eject not operating correctly and "reloading" the tape resurfaced on this machine a couple of days ago, and I am trying to help to fix it.
I have noticed that it...
Forum: Video Hardware Repair 08-17-2021, 10:37 PM
Replies: 9
Views: 1,096
Posted By Tokyo_DIY
Yes, I would guess that at least 10MHz BW would...

Yes, I would guess that at least 10MHz BW would be necessary.
The truly cheap oscilloscopes have a BW or merely a few hundred kHz (e.g. https://www.amazon.co.jp/dp/B07RT7D8DT#customerReviews ).
Forum: Video Hardware Repair 08-14-2021, 08:54 AM
Replies: 9
Views: 1,096
Posted By Tokyo_DIY
Do you know what are the minimum specs (sampling...

Do you know what are the minimum specs (sampling rate etc.) for an oscilloscope when adjusting S-VHS vcrs?
I am asking because I see that e.g. on Amazon there are nowadays incredibly cheap USB...
Forum: Video Hardware Repair 08-10-2021, 01:23 AM
Replies: 9
Views: 1,096
Posted By Tokyo_DIY
You are right. 1/4 of a turn clockwise and now it...

You are right. 1/4 of a turn clockwise and now it is basically perfect in both EP and SP. Thank you so much!

(The full story is that before starting this thread I had already tried to do the right...
Forum: Video Hardware Repair 08-09-2021, 10:30 PM
Replies: 9
Views: 1,096
Posted By Tokyo_DIY
To make a bit clearer the situation with a EP...

To make a bit clearer the situation with a EP tape and auto-tracking, this is the result with most tapes: one line of noise in the lower part of the image, as in the attached photo.
Forum: Video Hardware Repair 08-08-2021, 03:06 AM
Replies: 9
Views: 1,096
Posted By Tokyo_DIY
Changed drum assembly on JVC HR-S9600U and have tracking issue

I have a Japanese equivalent of a JVC HR-S9600U (the model is Victor HR-VX200), which started already some time ago to give issues with the dynamic drum system: every time that the drum tilt is...
Forum: Video Hardware Repair 08-02-2021, 08:42 AM
Replies: 23
Views: 1,124
Posted By Tokyo_DIY
When I add grease to vcr gears where at least one...

When I add grease to vcr gears where at least one of the two gears is made of plastic, lately I use a silicon-based white grease with teflon. I hope this is ok. The drawback of this grease is that...
Forum: Video Hardware Repair 08-02-2021, 08:31 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Many thanks for your help. This issue seems to...

Many thanks for your help.
This issue seems to be solved.
It was actually the mode switch which needed a deeper cleaning. One sector of it was still oxidized. After this second pass of cleaning...
Forum: Video Hardware Repair 08-01-2021, 01:58 AM
Replies: 23
Views: 1,124
Posted By Tokyo_DIY
Right. One of the things I am wondering about...

Right.
One of the things I am wondering about is this black grease that has been used in this part of the deck. I have heard that the wrong type of grease (e.g. grease made for metal gears) can lead...
Forum: Video Hardware Repair 08-01-2021, 01:47 AM
Replies: 23
Views: 1,124
Posted By Tokyo_DIY
Many thanks for sharing this info. I am...

Many thanks for sharing this info.
I am considering a bit what is the most economical thing to do. I have bought the VCR itself with all accessories included for 2700JPY, and this pair of gears on...
Forum: Video Hardware Repair 07-31-2021, 06:32 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
I have removed only the mode switch, so I can...

I have removed only the mode switch, so I can re-check the timing of that.

The loading motor can be seen in the attached picture. I hope it is clear enough.
Forum: Video Hardware Repair 07-31-2021, 05:28 AM
Replies: 28
Views: 2,588
Posted By Tokyo_DIY
Eject malfunctioning in JVC HR-S9600?

I got a request from a neighbor to try and fix a Victor HR-VX200. This machine is the same as the JVC HR-S9600 (NTSC S-VHS dynamic drum system).
The machine, manufactured in 1999, is in beatiful...
Forum: Video Hardware Repair 07-31-2021, 02:17 AM
Replies: 23
Views: 1,124
Posted By Tokyo_DIY
Yes, the problem is exactly where the metal gear...

Yes, the problem is exactly where the metal gear drives the plastic gear.
I had to tear down the whole mechanism, but in the end I could see that the issue is in the area of the red circle in the...
Forum: Video Hardware Repair 07-27-2021, 08:52 PM
Replies: 23
Views: 1,124
Posted By Tokyo_DIY
Yes, unfortunately it is possible that the gear...

Yes, unfortunately it is possible that the gear teeth are bad, and in that case I may be unable to complete successfully the repair.
I will carry out the disassembly this coming Saturday and will...
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