Dataframe XP 30 Power Supply won't start

I have an old Supermac dataframe xp 30 external scsi hard drive case. I wanted to use the power supply to power hard drives without having to plug them in to a case power supply.

I pulled the switching power supply out of its case and went to test it. The PS would not start and would just pulse, causing the fan to twitch and pulse on and off. I had not powered the device on in 10 plus years.

To make this very short after much testing I found that the power supply MUST have a considerable load on it, or it will not start. The fan and LED are not enough. Connecting a hard drive to it and it powered up fine.

Also the following items can be replaced with other components as listed:

2SK538 N channel Mosfet can be replaced with an FQP9N90C.

UA431 Adjustable Precision Shunt Regulator can be replaced with a TL431 or KA431.

The Blue POT VR1 adjusts the 12 volt power supply.

I do not know the ratings of the power supply but the hard drive in it was rated at 1 amp on the 5 volt supply and .68 amps on the 12 volt. I suspect it may be able to handle 2 amps on both but have not tested it.

Regency R1090 Scanner Owners manual

Regency R1090 Scanner Owners manual PDF

https://www.dropbox.com/s/9v4da7qt45ec4u5/Regency%20R1090%20Scanner.pdf?dl=0

When it asks you to login or create an account click X in the upper right.
Then Click Download in the upper right corner next to sign up.

Windows task bar is on top of full screen video or games

Windows 10 task bar is on top of full screen video or games.

This happened to me recently. I could not figure it out for a while, there are all sorts of "fixes" on the internet about it.

I got a clue that reminded me that I had changed the resolution of one of my monitors to something other than normal, and back again. restarting explorer did not fix the issue. I logged off and back on again and now it is back to normal.

Hum in class D Sure Amplifier

I have a Sure 2 X 100Watt Dual Channel Class D HiFi Power Audio Amplifier Board - AA-AB32971 that I built as an amplifier for my computer.

I was having trouble with hum especially when the LED lights in my laundry room were turned on, or the wife ran a vacuum cleaner in the back room.

Also sometimes for no apparent reason I would just get hum at anything above low volume settings.

I tried line conditioners, filters, different outlets, ups's, audio isolation transformers, different connectors, and ferrite loops. Nothing would stop or reduce the hum. The audio isolation transformer would inject a local AM station directly in to the amp.

The power supply was a switching supply taken from an old laptop.

what fixed it was installing a 3 prong to 2 prong adapter on the plug. The lack of ground on the plug caused the problem to stop.

How to make your own Vanish or SaniFlush crystals

Sometime around 2009 the government banned Vanish and Sani-flush because it contained Sodium Bisulfate. 

The crap it has been replaced with is terrible at cleaning toilets and removing hard water stains. 

It also had the effect of helping to keep older toilets flushing because it dissolved calcium buildup in the jet hole.

use this information at your own risk.

You can't get real Vanish or Sani-flush but you can get the main ingredient that they used.

Just go to a pool supply store and buy Ph- but make sure it says on it sodium bisulfate or sodium hydrogen sulphate.

keep in mind this is pool acid and don't handle the crystals.

place 1/2 cup sodium bisulfate in the toilet bowl let it sit a few minutes and stir it with the bowl brush. wait 15 minutes or longer then scrub as normal. Sodium bisulfate does not fizz or bubble like the original vanish or sani flush because the bubble were for show they did nothing other than neutralize some of the acid made when the crystals dissolved in water.

The remainder of the ingredients was a surfactant (sodium lauryl sulfate), blue dye, and wintergreen scent. Only the sodium bisulfate did anything.

I use it all the time now.

Autocad 2000 not installed properly

You start autocad 2000 that was copied over from an older computer to a windows 10 64 bit computer. You get it working fine, then some time later (probably after a windows update) you get a variation of "this version of autocad was not installed properly".

Issue is that you cannot run the autocad 2000 installer on windows 10 64 bit. 

If you have access to a copy of autocad 2002 even a preview copy run that installer, install it, and it may fix the autocad 2000 install.

Disney Star Wars is dead to me

The only Star Wars that is canon is Episodes 1 through 6.

Though I liked Rogue one, I do not count it as canon. 

I deleted my copies of the DVD for 7 and 8 from my media server. I will be getting rid of the blu-rays.

You have ruined it Disney.

abrams... ALL your movies are garbage.