Go Back    Forum > Search Forums
Reload this Page Search Results
Ask Question Join / Register   FAQ     Today's Posts
Page 1 of 3 1 23
Showing results 1 to 25 of 63
Search took 0.00 seconds. Search: Posts Made By: Diopter_Doctor
Forum: Video Hardware Repair 02-05-2024, 02:35 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
Just finished another bypass mod. This one in...

Just finished another bypass mod. This one in particular ended up with a real nice output signal. (Better than my personal unit.) I've noticed the later models end up with minimal output brightness...
Forum: Video Hardware Repair 01-14-2024, 01:53 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
It's RG 179...

It's RG 179 (https://www.awcwire.com/product/rg179).

75 ohm, of course, and it's only 2.5mm in diameter. Stranded conductor.
Not good for long runs, but for small PCB mods it's great.
Forum: Video Hardware Repair 12-22-2023, 02:21 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
The member had an old spare TBC that we used the...

The member had an old spare TBC that we used the best parts out of each to make one working and one semi-functional. The video board is still damaged like we said at the beginning of the thread.

...
Forum: Video Hardware Repair 12-22-2023, 10:54 AM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
Yes! Through me for a loop.

Yes! Through me for a loop.
Forum: Video Hardware Repair 12-22-2023, 10:41 AM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
After frankensteining boards from another...

After frankensteining boards from another TBC-1000 unit, I discovered the root cause of the power issue. The main power switch had high impedance and was loading the 12V from the PSU. After replacing...
Forum: Video Hardware Repair 12-03-2023, 02:19 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
Here...

Here (https://docs.google.com/spreadsheets/d/1mYf1_lvhyUfSYcaaNBPwztUonN0u4IGWoJsJC3qYLw0/edit?usp=sharing) is a link to the SMD cap values I recorded from this project. These numbers are either an...
Forum: Video Hardware Repair 11-07-2023, 02:54 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
Considering it if the resistors don't do the...

Considering it if the resistors don't do the trick.

Is there one for composite and one for Y/C? I'm wondering why there are two.
Forum: Video Hardware Repair 11-07-2023, 09:41 AM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
I switched out the microprocessor, replaced all...

I switched out the microprocessor, replaced all electrolytic caps, replaced the SMD caps other than the I/O ones, replaced the DAC, and I'm replacing the resistors next. All that's left that are...
Forum: Video Hardware Repair 11-06-2023, 11:21 AM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
I couldn't source any ADCs. The DAC came in a...

I couldn't source any ADCs. The DAC came in a manufactured package and showed no previous signs of solder or bent pins so it's safe to say it was new old stock.

I considered the frame buffer...
Forum: Video Hardware Repair 11-02-2023, 05:17 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
Update: After replacing the DAC and the SMD...

Update:

After replacing the DAC and the SMD caps the problem remains. Our last attempt will be to replace the SMD resistors and hope for the best
Forum: Video Hardware Repair 09-19-2023, 05:30 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
Here's another one. I decided to solder both...

Here's another one.

I decided to solder both output and input this time. It looks much better without all the jumper cables.

I made a quick video of it here...
Forum: Video Hardware Repair 09-04-2023, 01:27 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
I doubt anyone happens to have access to an SMD...

I doubt anyone happens to have access to an SMD cap list of the video board. The owner and I decided to replace the DAC and see if that solves the issue first. It will take awhile to get it in, but...
Forum: Video Hardware Repair 09-02-2023, 04:49 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
Update: All testing has been done with other...

Update:

All testing has been done with other power boards and the amp is bypassed so it's direct feed from the video board.

Checked more temps and did some comparisons to my two other video...
Forum: Video Hardware Repair 08-31-2023, 05:58 PM
Replies: 28
Views: 1,318
Posted By Diopter_Doctor
DataVideo TBC-1000 video board glitching?

Having issue narrowing down an issue with a TBC-1000 video board.
Here is what is happening:
https://www.youtube.com/watch?v=GYtZOnkNojA

- TBC amp board is bypassed
- Capacitors replaced on VP...
Forum: Video Hardware Repair 12-21-2022, 09:25 AM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
I appreciate the kind words :) Thank...

I appreciate the kind words :)



Thank you, LS. This is really a hobby turned into worthwhile side projects.



Yes, I am continually learning and enjoy each step of the process. I actually...
Forum: Video Hardware Repair 12-20-2022, 07:23 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
I use PACE stations. I typically don't go over...

I use PACE stations. I typically don't go over 700 degrees F unless it's a very large pad I'm soldering to. Desoldering is always a higher temp than my solder station, though. ...
Forum: Video Hardware Repair 11-29-2022, 09:39 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
Yeah, it's sad... multiple solder balls. He...

Yeah, it's sad... multiple solder balls. He didn't pay any attention to detail and likely just tried to get it done asap. Also, designing and ordering a custom PCB what have been much nicer (and...
Forum: Video Hardware Repair 11-29-2022, 09:29 AM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
Repairing a unit modded by someone else. This one...

Repairing a unit modded by someone else. This one uses a perf board to replace the power side of the amp board. more pictures to come...
Forum: Video Hardware Repair 09-12-2022, 05:42 PM
Replies: 14
Views: 1,224
Posted By Diopter_Doctor
That cap receives the Chroma input for S-video....

That cap receives the Chroma input for S-video. So that makes sense, but didn't you say it happened with composite as well?
Forum: Video Hardware Repair 09-10-2022, 12:46 PM
Replies: 14
Views: 1,224
Posted By Diopter_Doctor
Sorry this isn't actually a test pattern. I never...

Sorry this isn't actually a test pattern. I never intended to upload this.

A few seconds of this TBC-1000 after refurb and mod.

https://www.youtube.com/watch?v=8C-_A6C1xvc
Forum: Video Hardware Repair 09-06-2022, 01:05 PM
Replies: 14
Views: 1,224
Posted By Diopter_Doctor
This is so strange. I didn't have any visual...

This is so strange. I didn't have any visual issues like this during my testing...

I actually recorded a video while testing your unit. I'll upload it to Youtube when I get time.

I used: Sony...
Forum: Video Hardware Repair 08-01-2022, 11:03 AM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
True. My unit usually sits by itself on a bench...

True. My unit usually sits by itself on a bench in an A/C'd room. For those who rack mount these, venting is not a bad idea.



Interesting, so even when they were brand new you think the amp...
Forum: Video Hardware Repair 08-01-2022, 09:57 AM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
A few reasons why this specific mod isn't for...

A few reasons why this specific mod isn't for everyone.

1.) Those who are using consumer equipment will not have/need BNC. Those are more so for professional equipment that already have those...
Forum: Video Hardware Repair 07-31-2022, 08:55 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
You can remove the amp, but you lose some caps, a...

You can remove the amp, but you lose some caps, a diode, and a voltage regulator needed to power the video board.

I've been recording the different revisions as I come across them. Essentially...
Forum: Video Hardware Repair 07-29-2022, 07:51 PM
Replies: 33
Views: 2,455
Posted By Diopter_Doctor
Different Datavideo TBC-1000 mods?

Curious to see what others have done as far as modding their Datavideo TBC-1000's.

Wanted to share one I recently did.
Soldered input to VP-301 board
Soldered output to VP-301 board and placed...
Showing results 1 to 25 of 63
Page 1 of 3 1 23

 

 
All times are GMT -5. The time now is 12:04 PM
Top of Page  -  Site Home  -  Forum Home  -  Archive  -  Forum Policies