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Search: Posts Made By: drzapp
Forum: Video Hardware Repair 01-27-2022, 02:20 PM
Replies: 7
Views: 205
Posted By drzapp
I do have a stairstep alignment tape, not sure if...

I do have a stairstep alignment tape, not sure if it is from JVC.
Forum: Video Hardware Repair 01-27-2022, 02:58 AM
Replies: 7
Views: 205
Posted By drzapp
Yes, I am taking the DD apart and replacing or...

Yes, I am taking the DD apart and replacing or repairing gears. I already have the mechanical adjustment figured out- I just mark where everything is before taking it apart, seems to work well...
Forum: Video Hardware Repair 01-27-2022, 01:25 AM
Replies: 7
Views: 205
Posted By drzapp
It is in a few I have, this is the most complete...

It is in a few I have, this is the most complete description I found, in the 9800u service manual section 3.2.3 (attached).
Forum: Video Hardware Repair 01-26-2022, 11:11 PM
Replies: 7
Views: 205
Posted By drzapp
Look what I found- Jig-RCU!

I've had a web crawler looking for the PTU94023B for over a year, and a few months ago, I got a hit on a site in the Netherlands. They would only mail it to EU countries, for some reason, but I have...
Forum: Capture, Record, Transfer 12-06-2021, 08:28 PM
Replies: 12
Views: 444
Posted By drzapp
I use the Hauppauge USB-Live 2 in Windows 10 to...

I use the Hauppauge USB-Live 2 in Windows 10 to capture lossless AVI, works great.
I have a Ryzen 9 3900x with 32 gig of ram, 6 TB RAID0 and GTX1080. I capture analog through the Hauppauge with...
Forum: Video Hardware Repair 12-06-2021, 08:03 PM
Replies: 7
Views: 346
Posted By drzapp
I went ahead and ordered one from...

I went ahead and ordered one from http://www.drviragopete.com/video-calibration-tape.php

It came today, and it's totally legit, a new tape, not used. I got the SVHS version, and it plays great-...
Forum: Marketplace 11-18-2021, 12:45 PM
Replies: 4
Views: 346
Posted By drzapp
That's why I'm developing a way to fix it without...

That's why I'm developing a way to fix it without filling in the crack, but pull it back together. Basically sewing it up.
Forum: Marketplace 11-15-2021, 05:40 PM
Replies: 0
Views: 204
Posted By drzapp
WTB- JVC JIG remote control PTU94023B

Been looking for a while... anyone have any leads on one?
Forum: General Discussion 11-13-2021, 11:40 PM
Replies: 67
Views: 3,352
Posted By drzapp
I've been lucky, I guess. I found a 9600, 9800...

I've been lucky, I guess. I found a 9600, 9800 and 2 9500's That were sold for parts on Ebay for ~$150-200 each (I know, overpriced, but that's Ebay). The only thing wrong with them was the DD, power...
Forum: Video Hardware Repair 11-04-2021, 12:50 PM
Replies: 7
Views: 346
Posted By drzapp
Thanks! The Wagneronline tape may be legit, I...

Thanks!
The Wagneronline tape may be legit, I got some s9600U OEM parts from them- a complete roller assembly and the plastic bracket holding the stationary backtension post that is always broken. I...
Forum: Video Hardware Repair 11-04-2021, 01:04 AM
Replies: 7
Views: 346
Posted By drzapp
Anyone use these alignment tapes?

I was looking around for some decent alignment tapes to calibrate my repair/referb VCRs, and came across these two sources. I was hoping someone here has used either or both and can give me some...
Forum: Video Hardware Repair 10-21-2021, 08:41 PM
Replies: 0
Views: 174
Posted By drzapp
HR-DD750U cheap source for JVC HR-S9x00 parts?

Thought I would pass this info on, since I don't see it mentioned anywhere in the forums.

I've been rebuilding some 9500, 9600 & 9800 JVCs I find broken on EBay. Finding parts is a challenge, but...
Forum: Marketplace 10-21-2021, 07:49 PM
Replies: 4
Views: 346
Posted By drzapp
WTB: Your broken dynamic drum parts

I've come up with a way to repair some of the cracked gears that jam up the dynamic drum, using silk thread. I'll put up a detailed post after I get good pics. But I have limited parts to work with...
Forum: Video Hardware Repair 10-17-2021, 05:17 PM
Replies: 9
Views: 335
Posted By drzapp
A quick follow-up, I got a DD750u, and it does...

A quick follow-up, I got a DD750u, and it does have the exact gear driven dynamic drum as found in the
hr-s9x00u models. Not only that, but the tape mechanism is identical to the HR-s9500u and...
Forum: Capture, Record, Transfer 10-14-2021, 02:02 PM
Replies: 6
Views: 346
Posted By drzapp
Ok, I can see I should have titled this...

Ok, I can see I should have titled this "Everything you wanted to know about TBC theory" LoL
I'm a scientist, so I like theory, but I can understand most here are interested in more practical info.
Forum: Capture, Record, Transfer 10-14-2021, 11:00 AM
Replies: 6
Views: 346
Posted By drzapp
All you ever wanted to know about TBCs

Apparently, someone named Turkus at NYU did their master's thesis on TBCs, and it's very detailed. I couldn't find this mentioned in any other posts, and thought it was worthy of a sticky.
...
Forum: Video Hardware Repair 09-30-2021, 03:47 PM
Replies: 9
Views: 335
Posted By drzapp
I can't find a service manual for the DD750, do...

I can't find a service manual for the DD750, do you have one in a shareable format?
Forum: Video Hardware Repair 09-28-2021, 06:30 PM
Replies: 9
Views: 335
Posted By drzapp
Well, depends on your definition of cheap, but in...

Well, depends on your definition of cheap, but in the $150-$250 shipped range. Considering the working ones go for 2-3x that, I can get two nonworking ones to make 1 good one and make some profit....
Forum: Video Hardware Repair 09-28-2021, 08:56 AM
Replies: 9
Views: 335
Posted By drzapp
Thanks for the replies! I'm mostly scavenging...

Thanks for the replies! I'm mostly scavenging mechanical parts, but there are a few transistors/ varistors/ diodes that are obsolete and discontinued, so I would be taking individual electrical...
Forum: Video Hardware Repair 09-27-2021, 10:54 PM
Replies: 9
Views: 335
Posted By drzapp
Using PAL parts to fix NTSC

So I have a HR-s9500u I'm restoring, and of course parts are hard to find. However, there are often hr-s8500EU and hr-s8600EU on ebay for cheap. Looking over what schematics I can find, it appears...
Forum: Marketplace 09-03-2021, 02:12 AM
Replies: 3
Views: 617
Posted By drzapp
****sold****

****sold****
Forum: Video Hardware Repair 09-02-2021, 03:53 PM
Replies: 0
Views: 223
Posted By drzapp
Fix for dynamic drum with broken motor shaft worm gear?

As a follow-up to this thread (https://forum.videohelp.com/threads/393383-JVC-Dynamic-Drum-Ultimate-Fix#post2630005), I had the same issue but it was not fixed by removing the gears because the main...
Forum: Video Hardware Repair 08-29-2021, 02:38 AM
Replies: 6
Views: 259
Posted By drzapp
They are packed with dirt/dust/plastic and very...

They are packed with dirt/dust/plastic and very smooth and hard, don't brake at all, so my tape tension is messed up.
Forum: Video Hardware Repair 08-28-2021, 10:45 PM
Replies: 6
Views: 259
Posted By drzapp
Thanks, but I saw that thread. It just mentions...

Thanks, but I saw that thread. It just mentions chamois, not felt, which is what I was asking about.
Forum: Video Hardware Repair 08-28-2021, 05:46 PM
Replies: 6
Views: 259
Posted By drzapp
What brake pad material to use?

I have a 9500u that needs all the pads replaced. I have searched high and low, and found surprisingly little on this topic. The original pads are some kind of felt, but I have not found any posts...
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