Sony 8-301 and 5-307 triage
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- Опубліковано 25 кві 2024
- First look inside a couple early Sont B&W solid state portable TVs. This did not go as planned 😅
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Bought a 5-307 surplus from a hospital in 1978 and restored it then. In the late 70's most of the electrolytics were bad!
On the 5-307, to adjust UHF tuning, set VHF selector to U and use the VHF fine tuning to select UHF.
When I got mine in the mid 2,000s, It had no vertical deflection. Bad electrolytic caps on the deflection board.
At some point I replaced the resistors on the deflection board with 1% metal film resistors and saw a marked improvement in the linearity of the raster.
I did learn that the image does change as the line voltage changes which prompted me to add a winding on the power transformer in series with the existing secondary so that I would get about 16Vdc in order to use a 12 volt regulator.
One thing I absolutely hate is the connector the deflection board plugs into. Remove the board a few times and terminals where wires are soldered to start breaking off.
Except for the obvious antenna on top, the rectangular set looks much like a small bench oscilloscope. 😊
If you and others are not aware, you must use OEM transistors in any Sony product. They designed the sets to use specific parameter transistors. Universal transistors can cause major problems. I watched 2 techs dump over $250.00 in universal transistors in a TV set and never got it working (In i970's dollars!) OEM would have solved the problem. Design was based on specific gain parameters of selected transistors. I am talking Sony parts, not other sourced parts of the same number.
I remember by Dad bought one(the 8-301) of these back in 61 or 62. My Mom was not happy and I suspect it was because these were pretty pricey in 1961 dollars(a gallon of gas was 30 cents!). Also remember an over the shoulder Battery Pack for longer viewing time.
Yep! I had one those too. It was a black leather case that has the glass battery inside and it and was vented. I'm thinking not many folks sprung for the extra accessory battery pack in the leather case because I don't see them too often.
Don't forget the paper plates. !
Well, no wonder it was only half the weight of the newer one 😄. That was quite funny. Brilliant looking set though. It looks so futuristic for the period. Would be perfect for a Sci-Fi movie set prop.
Wooow! Such an awesome television set, this was manufactured before the Trinitron lineup!
I keep picturing the classic Godzilla films where they would have that portable tv in the background or in a scene, btw did you find the paper plates for dinner?
One pin will be grounded. The pin next to it is 12 volts.
Great to see another video and what a surprise and very interesting seen a few things with Shango. Nice difference and love this channel. Waiting for future follow ups on Admiral TV and learn some more exciting stuff. Thanks
Mike
I restored a TV5-303E from Sony, which is pretty similar to the 5-307, and it has the same setup with a removable PCB which holds all of the vertical and horizontal deflection circuit. I remember thinking that it made the TV a bit easier to repair.
However, the edge connector is tricky... when you insert the PCB back into the pivoting edge connector, you MUST reattach it to the chassis, otherwise it just won't work, for two reasons, 1) the edge connector simply doesn't give good enough contact otherwise and 2) you need to attach the PCB to the chassis to have proper grounding.
It's a cute type of TV and I got it to work after repairing the vertical deflection circuit, if memory serves. I used fairly standard transistors and other off-the-shelve parts to restore it. Most of the work is really caused because, paradoxically, the whole thing is so very small and crammed into so little space. Also, the power cable is notoriously difficult to find, since it's a rather rare proprietary Sony cable.
A shame to see the 8-301 gutted though... literally. I guess it must have been used as a prop or something. I hate it when people do that... they really throw away a precious piece of history out of ignorance. I'd gladly buy the CRT off the owner though for a future project maybe
It wasn't gutted though. It never had a chassis installed and CRT has never been used. I can tell because there are no witness marks. Dag coating on CRT is pristine and had the base pin connecter in place. Also controls have never been wired.
So I guess I shouldn't take too much stock into believing that the older set is half the weight of the newer set. 😂
I have worked on both of those. Pain in the butt. Both had bad caps and noisy transistors. And that was back in the 70's. You dodged a bullet with the with the 301.
The early 1960's Sony TV manufacturing appeared to be patterned after pocket transistor radios at the time; low quality circuit boards and aluminum electrolytics were used. Every Sony TV I ever worked on was unnecessarily difficult to service. Sony was boastful of making their own transistors which had mixed reliability and made for substitution difficulties since replacement Sony transistors were not available. On a positive note, I developed quite a skill of finding semiconductor replacements over the years as I left TV servicing for better careers in electronics.
There are a number of different CRTs which would certainly work in place of the 140CB4 but a 210HB4 may be a bit hard to find. At least that one's in good shape.
Sony made some real advanced technical stuff in the seventies like the Trinitron color television. They real advanced the transistor technology that was created by people like Shockley and Moore who worked at Fairchild Semiconductor
Great shame they've lost their way in recent years, i worked indirectly for them from the late eighties onwards, it was like one big family where everyone looked out for each other, very best of times.
That is so cool! I have one of the little Singer TV's. It needs some caps, I'll get around to it one day.
I have that early Sony, with the power cord, leathette carrying case and external battery pack make me an offer. It was working the last time I used it
There is solid-state, seems the next step is empty-state.
Thats very interesting, display/salesman model makes sense but it's funny that the CRT in it is legit
It's complex, but I like your chain of thought
The batteries were contained in glass if I remember correctly.and you could top off the electrolyte. My set had the optional leather battery carry case and charger. I didn't have it very long before I traded it for a Bell 6060 tube Amp. It was supposedly new old stock. The guy was a sony rep and saved it all those years
The 5-303 (earlier model without the UHF tuner) I have has a plastic cased battery.
I'm betting that 4 pin power connector actually has 2 cord options: one to power it off AC for home use, and the other being a 12 volt option that would plug into your car's cigarette lighter outlet
Yes, it does. I believe all the early Sony sets do.
In the Jerry Lewis classic, "The Errand Boy," there's one of those on the mailroom manager's desk.
Yes,it's on Stanley Adams desk. There are also Sony radios and other Sony products in the movie. Sony had a product placement deal with them.
I vaguely recall shango digging into one of these a while back…. Edit yes you mentioned it lol
You need to put some Creap Erase on those televisions
The 8-301W's usually restore quite well. The pcb edge connectors need cleaning or can be a source of odd intermittent 'fun'. Line linearity is never brilliant.Make sure the video amp decoupler area on the middle pcb is well grounded to the chassis as vertical striations result otherwise, think due to sitting above the scan coils.I had one where the flyback was intermittently arcing internally to its mounting bolt!
For testing just run the Sony off a 12 volt supply.Note that brown wires inside are 12 volts.
You can download the Sony service manual free from Internet archive, 44 page pdf.
I'm not restoring the 8-301W. It's empty. Have not found 5-307 manual online. Not for free anyway.
@@bandersentv That's available for free on Internet archive also as a 23 page pdf download, go there and search for Sony TV5.
Got it. Thanks
@@bandersentv ACORNVALVE has a pdf about his restoring of a 5-303. The 5-303 is the first version without the UHF tuner. I have a couple of those as well as a carrying case and leather battery case.
Wow! When you got to the part where you discovered there was no chassis I felt bad for the guy. Hope the guy didn't pay much for it. I have to admit,I figured something was up when you said the smaller transistor set weighed more.
Nothing. He got a bunch of sets from a former TV repair shop owner many years ago. This may have been a window display
@@bandersentvWell at least that's something and now he has a spare housing and tueb
@@Suddenlyits1960 He'll put it on a shelf for display along with his other TVs and radios. The history of where it came from is more important than it working.
wow
4-pin power plug looks like 2-pins AC (probably top 2) and 2-pins DC.
Yes. That was standard power input for Sony AC/battery portables. I have a cassette recorder with that same connector.
Are you a Devo fan ? That looks like a Devo shirt. I love Devo. Also I have one of those little Sony TVs.
Yes, long time fan! Very much regret not seeing them back in the 80s or 90s.
@@bandersentv Are we not men? We are Devo!
@@Suddenlyits1960 D E V O
@@bandersentv I have a lot of their albums but I play my 12 inch single of Peek A Boo a lot. See you at the convention Saturday.
@@andershammer9307 Have you seen them on Solid Gold? ua-cam.com/video/KLY7CZutpFY/v-deo.htmlsi=Ue2oIs7Oj6_cUqmN
Fix the focusing already !!!
I did. Footage is from 6 months ago
😂 no wonder it is so light!
I think I need a new prescription for my glasses...oh wait!!!!! The carrier frequencies for the 1960-61 TV are 26.XX MHz? I thought most TVs had moved on from that to the 45-47 MHz range by then.
Footage is from months ago before I switch to manual focus. Yes, in the US 45 MHz was standard by early 50s.
I believe the 25MHz IF was used due to the then frequency vs gain limitations of the germanium transistors.
This is a Japanese built TV, so they probably weren't using the same IF as in the USA. Even US manufacturers didn't agree on IF frequencies. In 1956, Admiral was using 21 MHz in VHF only sets and 41 MHz in the VHF/UHF ones. And they didn't trust PC boards for 41 MHz, using a hand wired sub chassis instead.
The 5-307 is a decent TV.
Just don't do like I did and try to add a video input.
It's a lot of work and doesn't yield good enough results.
Hello im currently in possession of 2 8-301w sets and im interested in acquiring a third set for a upcoming short film im working on
If you're ever interested in selling your set do let me know as i also am doing repairs for these sets to try and use them in the film rather than have them as a background peice
Ah, it's not mine. I repair them for customers
@bandersentv well if they were to sell the chassis with the tube do let them know i would be interested in it as im sure i could fit something in it to fill the void
Two of these Sony 8-301W transistor televisions at Sargent Auction tomorrow Saturday online. Current bid $10 Lot 84
In an auction the staring bid is no indication of the final price.