DGPIX SDVS-1050 Video Stabilizer

[johnnyquid]

I found this at Goodwill. The main chips in it are the TI TVP5147 video decoder, SAA7120H video encoder, and a Syncmoss SM89516AC micro-controller. It did not come with a power supply and I have not found any documentation for it.

The voltage regulator chips are the KA78R33, KA78B33, and KA78R05 so I am guessing that a 6V or 9V power supply would work.

Does any body know what type of stabilizer it is?

[punkmfr]

Yes. This is a DIGITAL STABILIZER that defeats Macrovision / Copyguard from VHS/TV/Cable - To Recordable Devices (PC/DVD Recorders/DVR)
It still works for a majority of devices today including a majority of BD Disc going one to one output.

There are multiple correction features such as jittering, color enhancement, contrast, and more
including worldwide system conversion Pal/NTSC.

You wont find much info on these. If I remember correctly, the disappeared quite quickly back in the day when they came out.

They do work though. Quite well. I still have one up and running, Just lacking on todays inputs, etc.

[FrontierDK2]

Yes. This is a DIGITAL STABILIZER that defeats Macrovision / Copyguard from VHS/TV/Cable - To Recordable Devices (PC/DVD Recorders/DVR)
It still works for a majority of devices today including a majority of BD Disc going one to one output.

They do work though. Quite well. I still have one up and running, Just lacking on todays inputs, etc.

I bought one at a flee sale, but I don't have a power supply. What are the specs of your power supply?

[xaigo]

Yes it works. Use to record movies from cable channel. No longer using it because misplaced the power supply adapter. If anybody knows the adapter info please reply. Thanks

[johnnyquid]

The KA78R33 Voltage Regulator Specifications are the following:
Output Voltage: 3.3V nominal
Input Voltage: 35V maximum
Current Rating: 1A

The KA78B33 above is probably also a KA78R33. The markings are hard to read.

The KA78R05 Voltage Regulator Specifications are the following:
Output Voltage: 5V nominal
Input Voltage: 35V maximum
Current Rating: 1A

Some other KA78 voltage regulators seem to have 20V maximum input voltages.

Since maximum output voltage of the voltage regulator chips is 5V then you should use a power supply with 6V or more but less than the maximum allowed. The higher the input voltage the more heat they will create. I would use a 6V or 9V adapter. I suspect you wouldn't need much amperage. None of the have heat sinks so they are only good for about 1.5 watts each. It appears the plug outer cylinder is negative voltage and in the inner pin is positive voltage.

[dellsam34]

I would assume 12V (1-2A), Most of these came with 12V supply and a regulator to step down to 5V to run the chips, The likes of AV Toolbox.

[johnmeyer]

Use ChatGPT. It provides the information you need. Just make sure you get a transformer with the center polarity correct. Also, be aware that there are about half a dozen different round power supply connectors with different inside and outside diameters, and you'll have to find a supply that has the right connection.

[dellsam34]

ChatGPT in most cases is not gonna help, It grabs info from the internet that may or may not be correct, I wouldn't trust it over manual search.

[johnmeyer]

ChatGPT in most cases is not gonna help, It grabs info from the internet that may or may not be correct, I wouldn't trust it over manual search.

I like it, and use it, because it sometimes is able to integrate information from multiple sources. I can do this myself, but it can take a long time.

In this instance, the results are somewhat amusing, because the cited source for most of its recommendations come from this forum.

I'm not sure I've ever encountered a piece of hardware which has less information available on the Internet.

If the OP is able to open up the unit, there might be something silkscreened on the PC board next to where it connects to the power receptacle.