Other than the original CBS test pattern tube that ws donated to a museum, this is the coolest piece of hardware I’ve seen on this channel. Thanks for sharing.
These Analysts are neat, that's for sure! I had a model 1076 (the earlier version) from 1978 to 1999. Just couldn't justify the space in my small house anymore. Still regret getting rid of it.
The CRT / Photo-multiplier tube is the basis for a flying spot scanner. That's probably a 5FP7 dual phospher tube that has a Blue/UV phospher driving a long yellow one. Hams used to build FSSers for SSTV use. Sometimes a slide wasn't used, instead the CRT illuminated a positive image (photo) and the reflected light was read by the PM tube. In this case, two PM tubes were used, each looking at the card at a 45 degree angle and their outputs were combined. Those 931 PM tubes, and the surplus 5FP7 radar tubes used to be dirt cheap, but for some reason they seem to have become 'rare' and now go for a higher price. BTW, that 5" CRT only needs about 5KV NOT 15KV! Some variants of the 5FPx tubes were made with an aluminumized screen, they wouldn't need the ion trap magnet. If the tube suffix ends in "B" it is an aluminumized screen.
I think your quite right, the CRT voltage should be lower for such a small screen. Is it me or was the CRT also meant to be a little brighter? maybe the ion trap magnet might be slightly out of alignment
WOW! You put the REAL star late in the show! That Magnavox is a beautiful machine. I hope she has many years and lots of good watching in her future. Hey I like to be an optimist. The my auntie's house was done up in that late 1960's faux Asian style. It's an acquired taste, but if done correctly can be quite pleasant.
That picture on that tv reminds me of the picture we had on our first color tv as a kid, the tv was ran from morning to night and the life was sure ran out of the crt. Got used to watching it like that, there was no emission left in the green gun, red and blue weas super weak. We has to close the curtains to watch the thing. We got our second color tv and WOW! All the colors and it was BRIGHT ! That was the days before I was in to tv repair.
Every Monday @ 7 AM pt I tune in to see if he has thrown us a bone for the week. Never disappointed. He is the favorite UHF channel that played Looneytoons in the afternoon- after school when I should have been doing homework.
Pretty cool piece of test rig. And a rather zippy diagnosis. Love the historical material-- those were slower times indeed. Just gave us more time to get into individual trouble!
There was a whole soulfulness to consumer electronics repair that is so under appreciated today. The irony of watching disposable cell phone advertisements through a DTV converter on a vintage set is not lost on this viewer. Thanks for sharing !
I’m old enough to miss actual letters and notes. Love physical stuff. Yes it’s easier and more efficient now but those are not always the highest values in life.
I've got a BK 1076 I picked-up for $5 someplace. Too cheap and too cool looking to pass up. One of these days after the other 150 projects get taken care of...…..sigh.
Thanks for showing and explaining the details of this device. I'm not an electronics expert but I do enjoy watching your video posts, the old tvs etc. Thanks again
Yeah, I’d like to substitute most of the signals you get with crap-o-magic cable TV with something like these videos (and others by radiotvphononut, 12voltvids, bandersontv, etc...) Even the test signals put out by the B&K are more intelligent than the mind garbage on TV nowadays. Can shango066 do an EOL video on actual CATV programming? 🤣😝😆
@@5roundsrapid263 I didn't really want to call anyone out but there is a certain generation I have in mind that generally has entitled attitude and it's not the Millennials.
Well, we may ask ourselves how people got things done back in the 80's, but the fact is that they did, and it was far better times than now. If you by chance should invent a timemachine, and need a guinea pig for the first test trip back in time, I'm on. Just give me a heads up.
I have been on the hunt for a 1077 and the 415 for years but yet to find either. Ebayers think they are worth a fortune and then there's the ridiculous shipping fees that every Ebayer thinks they need to make a profit on the shipping. And as for repurposing the vintage tv's. That really yanks my chain. Those too, I am always looking for and they are extremely rare down there in the South. Great video by the way.
A guy I know cleaned out his garage and shop and filled a 30 yard dumpster with all kinds of electronic stuff. It's all gone now. I may never forgive him......
I amazed that you were able to quickly locate trouble spots so precisely using methods that at first glance look to be at best completely off the wall yet seemingly carefully honed, interesting.
Cooke-moona-bloover, where do you get those names from? Laughed till I cried. Another fantastic, interesting, informative, Cooke-moona-bloover, awsome video. Both this channel and your mine explorer one are mandatory viewing; absolute best Vids on the tube, thanks for sharing. 👍 👍 👍
I tried to collect anything like this I could back when I was actively fixing TVs. I mainly ended up with crt rejuvinaters and new and old tube testers. I have a nice suitcase tube tester, a couple of the old military 177b units that will test almost any tube ever made up to the mid 50s, one has all the extra tube socket adapters and updated manuals, and at least one from the late 30s. I have all kinds of weird things I've collected over the years and all those tubes I collected back from the mid 70s up. Guess maybe I should see which ones are worth money these days and start selling them off.
Shango, couldn't see all the documentation you had on this, but I have an original instructional manual for this one if you don''t have or need one . Let me know and I'll send it to you. Least I can do for all the quality videos you send out. John
Gath TV and Appliance building still there. It's a Furniture and Mattress store now. Total recap and don't forget that tall silver can! Great save,never going to the dumpster! You know that Magnavox console TV would look good in any mid-century home in Palm Springs CA! Maybe someone there would like it if they have a fire extinguisher handy! Medullary Thyroid Crystals out!
I'm actually in the middle of restoring one of these. I have the version with the ICs. The CRT is not identified in the documentation I have, apart from the B&K part number. I suspect it has a P16 phosphor as it is purple/UV colour and very short persistence as required for flying spot scanning. The documentation also specifies the EHT for the CRT is approximately 12.5 kV, I get slightly less than this in mine (which has the aluminised CRT). I'm in Australia, and had imported my BK 1077 from the US, so I have to use a 230-117 V converter that also converts frequency from 50 to 60Hz, as the BK 1077 uses the mains frequency to determine the vertical frequency. I have also experimented with a divider circuit that I added to the existing IC divider to also generate a vertical signal that is referenced to the 189 kHz colour bar, giving interlaced video. There was a PAL version made for Australia, I have seen advertisements for it in old electronics magazines, but I have never seen an actual PAL unit.
Does this dont leave the room thing and constant maintaince apply to more modern CRT sets? Ive got a HD CRT set from philips and love it. game on it daily.
My great grandparents had a Magnavox almost identical to this but the chassis was blonde and not black. Had the rollout doors and everything. Not sure what happened to it but probably went to the dump when they passed.
Great work, Shango066! If you ever have any duplicates of the slide set, I'd be interested, I have a good working 1077B, (after I re-capped it), but I only have one slide. It's the best piece of diagnostic equipment I have, it's helped me often in subbing vertical and horizontal signals. BTW, I know where Memorial Pkwy is, in Huntsville, AL! I have relatives near there!😊 Nice Oriental Maggie, and I like seeing your cat go by! My kitten is currently playing with trying to catch the image, as you pan on the Maggie chassis, as I write this! Cheers! Dave Pike "Bigdavestv"
If you're looking to get rid of sets I'll consider something that isn't longer than 6' whatever will fit in the back of my boxy Scion. I work on slot machines in Vegas and I'm trying to get more acquainted with CRT tech.
I'm surprised that B&K unit is a series string tube circuit. You'd think something that intricate would have a power transformer. Regarding the Magnavox, either it doesn't have instant on or someone made the right decision to switch it off. Maggies from that era often have cooked CRTs.
yup!!!, those color sets were known for flyback transformers going up in "SMOKE", and the fire department would be called, and they would take your prized possession out to the front lawn and proceed to douse it with water( plenty of it too!!! ). then I would get it for repair, and just about all of the output tubes would be cracked from water when the set was still hot!!!. then you would give the customer the estimate for repair, and watch their jaws drop, and the blood run out of their face. then the set would become a "PARTS" t.v. set( not repaired )
Back in the day... No internet, pay-by-the-minute "long distance" phone calls, typewriters, dot matrix printers, and Air Mail. Never could afford an analyst for my shop. Seems like they cost over $600 in 1980 - over $2000 in today's $$$.
That makes sense as the air breakdown in 10kV/cm, and most (normal) B&W sets used anywhere from 8kV to 12 kV or so, though some sets with extremely small CRT tubes may run lower, at 5-8 kV or so. Another indication of high voltage is several dead insects near the rectifier tube! 🤣 And it’s not a proper resurrection video without a dead insect, spider, or an old rat nest in the set... 😏
Update, the hipster interested in the Magnavox at the end of the video flaked out. I guess I'll rub meat all over it and let the pitbulls shredded to pieces
