#16
|
|||
|
|||
Back to the 1077
Some of those B&K's had selenium rectifiers. That could very well be the source of your smoke. If you have vertical linearity problems, change the two 2.2Meg resistors in there.
You can make extra slides yourself. Download the desired image and print it to paper on an ink jet printer. Take that image to Staples or Office Depot and ask them to make a transparency. Tell them extra contrast when they print it on the laser jet. Cut the transparency to the desired size. The transparency will cost about 75 cents. If the image is too big, you will have to use a graphics program to scale it down. I use GIMP which comes in Ubuntu Linux but I am sure Microsoft has similar programs. I found the desired size is about 300x400.
__________________
|
#17
|
||||
|
||||
Gimp was ported to windows ages ago, but the installer is kinda spamy.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#18
|
|||
|
|||
They also make it for Mac OS X.
And then there is: www.resizeimage.net. There used to be a desktop contraption at Eckerds drugstores that would do it. They only charged if you made a hardcopy of the image. But if you saved it to your flesh drive, there was no charge.
__________________
Last edited by kf4rca; 08-06-2016 at 06:38 AM. |
#19
|
|||
|
|||
Oops... my bad...
__________________
|
#20
|
|||
|
|||
According to RCA PMT Handbook...
the 931 tube is the most commercially successful PMT tube. So there should be lots of them out there.
The following tubes appear to be electrically and physically identical: 1P21, 1P28 (A & B), 931 (A & B), 4832, 4837, 4840, 4552. The only differences are photocathode material (affecting sensitivity) and glass envelope material.
__________________
Last edited by kf4rca; 08-06-2016 at 07:29 AM. |
Audiokarma |
#21
|
||||
|
||||
I got a B&K 1076 today from a friend for the Best Price. It is in much better condition than the 1077, so I will be fixing it instead.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan |
#22
|
||||
|
||||
I plugged the 1076 in today, and there is good news and bad news. The good news is that the magic smoke is still inside, but the bad news is that it has no high voltage. I heard no sounds come from it whatsoever. I won't be bothering with the 1077 anymore. This 1076 is in WAY better shape.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan |
#23
|
||||
|
||||
You did not click it to heater only stand by mode did you?
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#24
|
||||
|
||||
No. I made sure it was in the ON position.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan |
#25
|
|||
|
|||
When I found my second 1076...
it was laying in a pile of junk behind a shopping center. It looked like it had sat thru a couple of rainstorms. One of the pots was completely encrusted in rust (replaced it). But the tubes were intact and no cracks in the circuit boards. I set it out in the hot sun for several days to dry it out and after much scrubbing and scraping I got much of the remaining rust off. I then did resistance checks since I had one to go by. I went thru a whole can of contact cleaner cleaning the switches and controls. When everything checked, I powered it up. To my surprise, no smoke and it worked- well, sort of. I had tremendous vertical non-linearity, so I went thru the vertical circuit. It took a while working on it, off and on. But I always remembered one thing an old chief engineer told me. If it worked before, it can work again.
__________________
|
Audiokarma |
#26
|
||||
|
||||
I turned the B&K 1076 on again today, and I got an image! The CRT lit up pale blue. I also manged to find a whole bunch of slides still in the envelope. All I have left to do is learn how to use the thing. It's in exceptionally good condition.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan Last edited by TUD1; 02-14-2018 at 12:18 PM. |
#27
|
|||
|
|||
If you think Flying Spot Scanner technology is a thing of the past, you should google Rank Cintel Telecine. That's a high end film transfer device used to transfer 35 mm film to videotape. They have been around since the early 80's. I think they cost around $100K when new. I'm sure you have seen a movie on TV transferred with one. They do not use a shutter as a conventional projector and camera would. You will not find them at a TV station but more likely at a production house specializing in commercial transfer. Many of the Hollywood producers shoot in film and then do the distribution in tape.
__________________
|
#28
|
||||
|
||||
I hooked the B&K 1076 up to my 1971 Zenith 20BC50, and I actually got an image. The horizontal lock was non existent, but an image nonetheless.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan Last edited by TUD1; 09-22-2017 at 01:25 AM. |
#29
|
||||
|
||||
Those Analysts are handy devices. My 1077B worked fine after I replaced the electrolytics:
http://antiqueradio.org/BK1077BTelevisionAnalyst.htm Near the end of that article is a link to a discussion of the different versions of Analyst. It also mentions the book by Milton Kiver, Television Analyzing Simplified, which is the last word on using this gizmo. Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
|
|