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- เผยแพร่เมื่อ 28 ม.ค. 2022
- GE Porta Color Television Repair
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![A Restoration Adventure - [ GE Radio Receiver Restoration Series ]](/img/n.gif)
The sarcastic humour is the best in these videos, not just the good old analogue stuff.
Tin whisker info from a NASA paper and other sources: The exact cause of tin whisker growth is still not fully understood. It is known that a whisker grows from its base and that the tin around the base does not thin as the whisker grows. Tin whiskers are electrically conductive, crystalline structures of tin that sometimes grow from surfaces where tin (especially electroplated tin) is used as a final finish. Tin whiskers have been observed to grow to lengths of several millimeters (mm) and in rare instances to lengths in excess of 10 mm. Numerous electronic system failures have been attributed to short circuits caused by tin whiskers that bridge closely-spaced circuit elements maintained at different electrical potentials. Tin whiskers are not a new phenomenon. Indeed, the first published reports of tin whiskers date back to the 1940s and 1950s. Tin is only one of several metals that is known to be capable of growing whiskers. Other examples of metals that may form whiskers include some tin alloys, zinc, cadmium, indium, antimony, and silver among others.
Several years ago when there were supposed problems with the Toyota Prius accelerating out of control, one of the initial suspicions they had was tin whiskers. It ended up being the floor mats getting bunched up.
I think the space cowboys used parylene coatings to protect from tin wiskers.
Thanks I always wanted to know. Since seeing tin whiskers in a PortaColor 30 yrs ago!
And it is believed to have taken spacecrafts out of commission.
I remember as a young boy watching TV when all of a sudden 'SNAP', the screen would temporarily shrink, then come back. Didn't know at the time what it was till I started learning about 'tin whiskers', then I realized what the snap was back in the day. LOL!
The best looking porta color that I've seen was a last generation "HE" chassis model from 1976. A guy, who ran an antique store, had one and he ran it most every day in his shop. It got to the point that it was giving him trouble and after I fixed it a few times, I gave him an old 19" Zenith System 3 that I had on hand. In '77, the tube porta color was discontinued and replaced by the solid state AA chassis, but I think it took them a couple more years of building tube porta color sets to get rid of the parts inventory. By that time, the AA chassis solid state was the more expensive model and the tube HE porta color was the economy "let's move it out the door and get it gone" model.
I remember when I just moved to the US in June 1972, I saw an advertise in the News paper (Philadelphia Inquirer) for this color TV for $169.00 on sales at Silo Warehouse store . I was shock to know that you can buy n brand new colour TV in the US for that cheap while the color set in Thailand start with $500.00!
The transistorized chassis proved more troublesome than the tube version, mostly due to intermittent vias in the circuit boards. At the time, I was told you could fix almost any fault in the GE color chassis by soldering all of the vias , which were marked on the board with a W. You can see some of these on the board in this set.
for sure I am not sure what generation my GE tv is but I agree the 1976 line .
That pix tube is super tired. At the hospital where I worked we had the 19" Zenith hospitality line sets (made in 1982-1984) that had a million hours on them as you would expect. Patients never turned them off. We would often get a picture tube where the red would smear first then the blue. The green never went except if the gun shorted or the filament opened. We were lucky in that these tubes were the generation before Zenith tubes became terrible. We had the most trouble with the channel selector switch and the startup circuit PCB. We took care of 600 of those sets and if the switch was more durable and the startup circuit used better components they would have been relatively trouble free. The only other issue was some inductors on the horizontal section would start vibrating (singing) and the younger nurses and paitents would complain. The older ones could not hear it. A liberal application of glyptal would quiet it down.
I spend years doing elemental analysis of electronic components used in space flight to ensure no presence of tin. Other restricted elements were zinc, cadmium, indium, antimony, silver. All of them can grow whiskers, but may be allowed if not used for plating and depending on the substrate.
Wow. Do whiskers grow in all directions? Solder is a tin alloy. It was okay for space?
Plating deposits layers of charged metallic particles sometimes only a few atoms thick. Seems like dissimilar metals attached under unnatural (read unstable) conditions like temperatures, pressures (near vacuum) and charge distributions not normal results in unstable molecular bonds, potential energy and reactivity.
Nature always seeks the lowest energy state possible over time. Galvanic effects, moisture and atmospheric conditions can liberate these energetic materials to react, repel one another, and "grow" surface features disadvantageous to safe operation. A less dramatic and energetic form of this same process is rust/corrosion.
I would further speculate the metals like tin, zinc, cadmium etc. have a similar affinity for attaching in long stable chains preferentially to one another or some atmospherically derived compound versus the base metal or alloys. The way crystalline substances self arrange has a lot to do with their atomic structure, and the viable bonds they readily form with themselves or adjacent compounds. Seems like a fairly easy thing to figure out with the tools we have today (versus 50 years ago).
Lmao space flight's......
@@applanateearth586 lmao apostrophe plural
Tin Whiskers sounds like an old sixty's country band
Hahaha, it sure does!
Tin Whiskers is a brewery in St. Paul, Minnesota. No joke.
I was thinking more of a jazz pianist.
Glad that you feel better man! Your content is an essential part of my weekend
You're sounding a ton better. Thanks again for that bunker tour. That was spectacular.
Strong as a horse now
What bunker tour?
It was an older video. One of the shopping channels mentioned something making a great stocking stuffer.
I think we are more aware of Tin whiskers here in the U.K. as they occur in some of our older transistors like the AF117. It was interesting to see them growing on the metalwork.
you cannot stop whiskers with paint, it will just pierce through it
I have learned something today, I heard about tin whiskers but never knew what it was. Thank you Shango!
Thank you for resurrecting all those sweet analog tube TV sounds! Love it.
50 years to develop whiskers on bare tinplate. Paint the tinplate. Wonder if in another 50 years someone will attempt to repair this again?
Another excellent teaching video. Because of your skills, I'm into vintage radios. Thanks
Looks like the TV my Grandma had in her guest bedroom. it had an antenna, and my cousins and I would watch Saturday Night Live and Johnny Carson on it late at night when we were told to be sleeping!
Back in 1979 when I was 9 I fixed an uncles tube tv. No fear of being thrown across the room. Ignorance is bliss. I had not had my first (UK 250v) shock by then. I just flicked a few tubes and voila, crappy picture. I am now a verification engineer for Mr Dyson, the guy who saved the world from dust. I never went to university, my working class background would not have approved. Today’s electronics are so dull, everything is digital and 99% unneeded. WiFi connected cutlery. Any way I have an old Bush radio I am going to restore, your videos have given me the confidence, and excitement to do it. I would like to get the job done before the worlds end because I did not agree to tow the line and get the jibby. Would love to sit in a bar with you and have a beer and just stare at people. Keep up the public service.
This is a fantastic video! Thanks for teaching about tin whiskers. Very interesting!
I heard a plane, a train, and an ambulance.. only 13 minutes in can't wait to hear more easter eggs throughout.
Great video showcasing the problem; this phenomenon is really more of a menace to reliability than people imagine!
These whiskers/dendrites can grow for many reasons both electrical and electrochemical. Care should be utilized when cleaning them as many are actually lead and cadmium, which is a popular plating material and are easily inhaled during mechanical-cleaning. To avoid this, either use vacuum with a hepa-filter or solvent or aqueous solution so that they remain suspended. If outdoors, you could use compressed-air (preferably with a 'REAL' mask) but never do that indoors. When restoring worthwhile equipment that exhibits these formations, you really should try and disassemble the pots/switches or at least thoroughly flush them with a good cleaner. Also, look for these formations around metal to PCB mounting-points, EMI shields and especially tin-plated connectors.
When I worked in a steel-mill, we had many analog boards that would start drifting especially high-impedance circuits. We found these mainly in tin-plated connectors and PCB's that had tin-plating over the traces. So, a good scrub-down usually took all the gremlins away but they needed to be recalibrated because they had been repeatedly 'adjusted' over time as the problem progressed.
I miss analog TV. Despite a crappy picture, I'd still be able to watch stations 90 miles away or more. On a good night, a little tropo would bring in snow free stations 200+ miles away. I miss the e-skip that used to come in from all over the country. In the Eastern half of the U.S., the most frequently seen PBS channel on skip was WPBT 2 from Miami. Those were the days. I heard that the smog in LA would often bring in San Diego stations 100 miles and make then perfectly watchable.
I recently opened up a piece of high-end equipment from 1989 that was full of tin whiskers on the sheet metal RF enclosures. It was in a waterproof housing, with a desiccant to keep the humidity within the enclosure at a minimum. The indicator on the desiccant pack showed that it was still dry inside. To me that indicates that high humidity doesn't play a huge role in the formation of whiskers. The current understanding of tin whiskers is that they are extruded by material at a dislocation in the crystal lattice. It seems logical that thermal cycling would play a significant role in their formation; each hot-cold cycle would act as a pump, the hot cycle allowing atoms to move around within the lattice, and the cold cycle contracting the material, forcing the atoms that violate the crystal structure to be literally extruded.
That being a high-hour set -- along with the antiquated design of the old color NTSC standard -- forces limitations on the quality of the picture this set can produce. It probably had a mediocre picture when it was new, but in those days (as I personally remember) *any* color TV set was golden, if you could afford one.
I had one decades ago that I got from a rummage sale. “Mediocre” is exactly what it was at best. Others have jokingly referred to the portacolor viewing experience as like “watching tv through a screen door”.
They were very popular sets and Ge sold a ton of them due to their low price,and of course it being color. I’ve heard the earliest versions had slightly better picture quality,but I’ve never had one of the first models to see if that true.
GE made a bunch of compromises to keep the size, tube count and price down. But the Portacolor did pioneer the inline gun, which become the standard for non-Trinitron CRT sets. When Sony was developing the Trinitron (they were having trouble with a Trinitron precurser with a vertical mask with alternating charges), they took apart a few Porta Color sets to see what they could learn from them.
Flat screen LED TV's of today are like magic compared to the stuff we had to watch TV on back then.
Not necessarily. Later model small CRT tech from Sony, Sharp and Toshiba, plus circuitry stuff like comb filters greatly improved NTSC picture quality in the late 70s and early 1980s.
@@waltschannel7465 Granted, technology in color TV receivers *definitely* improved as the 1970's progressed into the 1980's, but ghosting in urban areas -- and snow in fringe areas -- were still persistent problems. In my opinion, the Sony Trinitrons were *excellent* sets among the smaller TV's. But larger CRT sets seemed, in my opinion, to produce a somewhat inadequate, blurry image, though.
I just brought back to life an RCA Victor New Vista color 14 in all tubes I think it might be a 1970, I took it out of a dumpster 15 years ago maybe more and it has a picture a lot like this, between fiddling with the AGC the tuner and hooking up my newly acquired VG91 which I love I wasn't able to get much better than a picture like this but after I ran it for a couple of weeks the picture seemed to get better and the purity seemed to clear up the clamp that holds the yolk from turning is completely rotten but I was able to get it against the CRT and positioned now I'm just using it on and off in the kitchen and it depends on the day sometimes it's a beautiful picture and sometimes it looks like this and I have to tweak it all the time. It's just part of the fun of dealing with old non-solid state high hour junk, thanks for your videos.
I have a 1978 SABA, albeit a 26 inch, with a Sylvania tube that's pretty much dead, takes 30 seconds for the red to come up, then the blue joins in like 5 seconds later and then at the 50 seconds mark the green starts coming up and after about 2 minutes it's almost watchable.
On this set, the convergence gets randomized every time I turn it on. FUN!
You inspired me to restore antique TV's. i was just doing Bakelite tube radios and now i'm doing a 1948 Halicrafters tv your video are really fun and educational was a little intimidating at first for me to work on old sets
Another great video as always Dr Shangus
You did good on that. Most of these sets can hardly see the pic unless you're in a dark room.
The made the tube version untill 1979. Then they switched to the AA series chassis (solid state) they suffered from bad connections on the pass thru rivets on the circuit boards. G.E.'s fix for the problem was to run a piece of wire thru the rivets. We just resoldered them and had few callbacks.
Why did they even have pass thru rivets? Single sided board, right? I'm confused...
Thank you Shango066!
Come for the interesting repair knowledge, stay for the fantastically cantankerous commentary.
Thanks for the upload best wishes from Columbus Ohio USA
The GE Portacolor was a unique size for a color TV on it's day but they never looked all that good really. I think you came close to what I remember. Nice job!
7:48 I think the tin has separated out of the solder after all these years. Pure tin forms long crystals. I’ve melted it, and when it cools, you can see the “needles” instantly form. It’s unreal.
Problem is the metal body is not solder and that is where the majority are forming. Certain alloys just do this. The "solution" is not use material that grows tin whiskers.
@@tarstarkusz You’re right; it’s probably the tin plating on the steel.
@@5roundsrapid263 it is .... i've seen this quite a few times, tin 'fur' covering metal chassis/plates/screens, etc
I really like the color tones of the old sets.
Gives me a special feeling.
Warmth? The color tones with the heat of the vacuum tubes from our color set growing up is a memory for me.
love the humor in your videos
I have a very first gen Porta Color - my family got it in fall of 1966 when I started 5th grade. I'm now 67 years old. The set was working til it sat for a while and when I fired it up, after a few minutes it made a 'snap' and I think it shut down. Maybe it's got whiskers. But it's in very nice shape, I'm sure it will someday get restored.
I had one as a kid given to me. I fiddled with the controls and got a fair pic but used it until the big tube was so dead I couldn't get anything but green. Being about half color blind It didn't bother me much but I was given a nice RCA roundie. Wish I still had. I have a couple Porta Colors, one is the Wards version, grandparents bought it new, and is a nice shade of avocado green, which always showed a good pic but never used much due to all the cracking and popping. Had a cousin that killed the sound by flipping it on and off. they had it fixed but didn't use it much after that. Yeah, violent arcing as described. I must also have one of the last of the run or my uncle Max (also a TV guy) might have put a newer CRT in it, since it used the newer stripe style. Thanks for sharing the whiskers Shango!
thanks for making videos, i learn new stuff
i didn't know there was a thing like tin whiskers... good to know! :)
I had one of these that I bought used back in the early 1980's... it was a great set, and had good color... all tubes... and I only had to take it in for service once for a capacitor and a resistor that had gone bad. I sort of still wish I had it. Good memories watching Tonight with Johnny Carson...
Never heard of this tin whiskers phenomenon before but good troubleshooting knowledge to have.
Ive heard you chat about tin whiskers, and read about em, but my god this video looks like a horror film about them. 10/10 for capturing this
Wonderful Video. Keep them coming..
Hey Shango066. You got it to work. That's the main thing. All my best.
Very interesting I would have never of thought tin whiskers were so aggressive. If the set was working when you put it in storage then they must grow even when the set has no power. I would have thought that the whiskers may be attracted to something to make them grow out. Love your videos, best regards from across the pond.
You do not need electricity for them to form only the right conditions.
Some commonly accepted factors that can impart additional residual stress:
Residual stresses within the tin plating caused by factors such as the plating chemistry and process. Electroplated finishes (especially "bright" finishes) appear to be most susceptible to whisker formation reportedly because bright tin plating processes can introduce greater residual stresses than other plating processes.
Intermetallic Formation: The diffusion of the substrate material into the tin plating (or vice versa) can lead to formation of intermetallic compounds (such as Cu6Sn5 for a Sn over Cu system) that alter the lattice spacing in the tin plating. The change in lattice spacing may impart stresses to the tin plating that may be relieved through the formation of tin whiskers.
Externally Applied Compressive Stresses such as those introduced by torquing of a nut or a screw or clamping against a tin-coated surface can sometimes produce regions of whisker growth.
Bending or Stretching of the surface after plating (such as during lead-formation prior to mounting of an electronic component)
Scratches or nicks in the plating and/or the substrate material introduced by handling, probing, etc.
Coefficient of Thermal Expansion Mismatches between the plating material and substrate
@@randyab9go188 Thanks for the very informative reply, interesting stuff. Everyday is a learning day.
I think this is the same phenomenon very often seen in the AF11(x) series of transistors in a lot of European radios. They all have three leads and one to the can, so you can blow the whiskers away temporarily by tying the active pins all together and discharging a cap between them and the can.
yep, i've also found the AC1xx types can also be afflicted, shorting to case, and even the supposedly 'better' AF12x types, i've had one go short internally to case, so far i've only destroyed one by current blasting, one of the leads wasnt connected properly and it blew a junction , all others it did 'cure' them ....so far .....
many times i've come across the outside of transistor cans, plus other tinned metal parts, covered in the 'tin fur', it definitely seems to happen more if they get damp, as shango says in the video ...
One guy tried to remove tin whiskers by heating the transistor - instant boom... Its full of grease.
@@mohinderkaur6671 will do in a sealed container, pressure increases until ...... i've found discharging a large charged capacitor into them works in many cases, its kill or cure ....
Your channel deserves 100K+ subs
Man those whiskers are everywhere. The paint might help for a dozen years or so. Would definitely outlast the pix tube.
TV is full of well worn Compactron infused goodness. For lovers of bambulance and airplane sounds this video rocks.
Any helicrapters?
(N)ever (T)wice the (S)ame (C)olor or (P)icture (A)lways (L)ousy. I love watching these videos. Its really interesting to see colour sets which still work that look like the black and white 405 line sets that we used to have in the UK. Of course to get a picture on those we'd need a standards converter in front of a DVB-T decoder. I'm not sure I could handle the 10KHz wine of the line output stage.
That is the same TV in her kitchen. Sometimes at dinner she let us watch Batman. Had to clean our plates.
Wow thanks.
Grandma?
Used to have one in my bedroom still have it sitting broken in the basement for decades. My dad fixed TVs in the 70s and seeing it on a shelf had him go over it so I could use it. He said it had a bad reputation and wouldn't try to resell it but had planned to put in his bedroom but I beat him to it lol
Tin whiskers, great cat name.
You measuring them whiskers in metric makes you sound very sophisticated to me.
love to see you hit it with a restore function and see what it looks like then, maybe the colors shadows will disappear, also be fun to compare that new old stock set
Gives a new meaning to the phrase “that one’s so old it’s got whiskers on it!”
53:03 Don't shoot until you see the white in their eyes.
I'm Dyin' over here.... 😆
I had a set like this that was given to me in 1985. Very similar. The knobs I think were a different color. It ran for a while and then it started acting like the contrast was turned all the way down. My father thought it was a capacitor. When it worked, it had good color but the resolution was poor due to the large dots. You really needed to set several feet away to watch it.
Whiskers have disabled every touchscreen used on Korg M3 synthesizers, which were built 2009-2013. Some lessons are hard...
I purchased a vintage porta color from 75 not too long ago and it's all tube as well, and it took weeks to get a good picture on it playing with the screens and the drives and the AGC and the tuner and finding the sweet spot between all that stuff after all that headache it actually produces a semi-decent picture minus that. Pitch thing you mentioned. It doesn't really demod green red yellow too well though.
Wow... I wish I'd known 40 yrs ago that you could fix that awful buzz just by tweaking the twerkulators. I've literally spent viewing years suffering with noise like that thinking I needed a new TV but couldn't afford one.
This Tv picture quality varies a lot maybe because agc is not working plus maybe need complete overhaul and complete alignment. You did great getting it resurrected
Great video
Good morning!
I really don't know which is worse, the quality of the picture or the quality of the tv programme... no, it is the quality of the programme
'72... best year ever
Not long before the gas lines, though! 25 Cents/gallon sure was easier on the wallet!
Great music!
Shango what I do with these potentiometers is renew the tracks with a pencil, an ordinary carbon pencil makes them perform much better
Seems to get better as you use it in the end
"Bones, any data on those things?" "It is life Jim, but not as we know it."
Shannon you sound much better now..you could even say "strong as a HORSE" 😂
Dam that crt sounds like a bug zapper the critters love it.
Bambulance! Cracks me up.
Ahh, setting down to watch Shango. Beer ? Check. Sammich ? Check. Roll !
Theese sets are also known to make loud Popping sounds when ac is applyed due to carbon tracking from tube sockets .I have ran into this 3 different times on three different sets,lol .
I agree about Sylvania color sets and tin whiskers, the few Sly-vania color sets I've worked with, had tin whisker issues. That GE isn't bad for a "Sorta-Color!" 😃
You should see these things under a microscope, crazy.
i enjoyed watching this video while people bounced off the front of my SUV
Hell, if I had an old tube TV like that I'd use it to play old Atari or Nintendo games, or Playstation 1. That set is sweet as hell.
The dot pitch of the screen might be too coarse to read fine text.
Gamers choice!😂
Tin whiskers---as Jordan Pier would say, "arcy sparky!" You did well by painting the enclosure for the pots, the whiskers will not return. Dust; this is one of the differences between ressurection and restoration. If you're only going to power a set up for a few minutes at a time, it's not a big deal....but if you're going to be using a set regularly, heavy dust on tubes and power resistors can cause a fire
gotta love this strange phenomenon.
This is the best video showing tin whiskers ( Called Dendrites ) . You showed them very well. I am in the middle of restoring my Dad's Hammond B3 Organ that has these whiskers everywhere causing a big variety of problems. SpinStar1956 has a good warning to ware a mask while cleaning these whiskers off.
Thanks for the reference , I do see at least 3 problems with this set. The color smearing or I call it color fit off to the right of the image looks like the Chroma alignment is way out. I think the coil forms and the dope they coated the windings with have absorbed moisture detuning the coils. Proof of it is when you found the sound detector coil out of tune. The weird ringing and Harring Bone looks like it is almost just on the green gun. Is the green CRT grid wire floating open circuit? I looks like it comes and goes. Does the Harring Bone go away if you turn the green screen off? Is the CRT Dag grounded? How about the ground leg on the delay line? The AGC does not look to be working right. it goes from over drive on some videos to way under gain on others. That is one sick puppy! These sets were never real good but a RCA CT100 has a HD quality picture compared to the GE Porta Color! AL G.
I had one of my cars setting for a few months at a garage till the mechanic got time to fix a unique body/frame rust problem. At one point I thought it wise to start it and run it and I was surprised to see this weird fuzzy stuff on the aluminium valve cover, so I guess that was also those whiskers as well. I wonder also if that is what happened to the ABS system aluminium box on my 1997 Buick as well, or the capacitors went dead or shorted. Can't get a new one and they are sealed shut but I might open one with a cutter some time, since I bought a used one and it did not work either. as for your getting a none working TV working with little to no parts is amazing as well as they way it was built. Not great quality but still usable and functions after many many years. Many TV's and computer monitors made these days fail in a 3 to 5 year period, as I found out mostly due to capacitor failure...
All those GM abs modules are bad. No one fixes the abs on a 97 buick, pull the fuse
The song in the car commercial is by Ministry if anyone was wondering. That's a pretty bad case of tin whiskers. A coat of clear lacquer at the factory may have prevented that. I was hoping that the picture would be a little bit better. I wonder if the tube in the Packard Bell TV will fit in the chassis. It would be interesting to see how much better it would look with a good tube in it. Although the picture was probably never great, there's no way it looked that bad brand new.
I think the song started out being Blue Monday by New Order (1983) but I won't be surprised if it has been sampled and remixed many times by other artists.
@@f114163 Yeah, I think you're right. I get mixed up with those bands often.
HEY SHANGO!! Thanks for the video
interesting set, my grandfather repaired tv's for almost 50 years (1952-1999) had to deal with tin whiskers too used to do something similar the controls metal shield where coated with clear laquer i don't recall if it stopped them or slowed it down
My Saturday now begins 🎉
Shango066 I would say a certain amount of electrostatic charge has a role to play in the growing of those whiskers, might be an interesting experiment to store the TV's on rubber mats and see if that helps prevent them coming back ? Just a thought.
I have one of those and I thought it was from 1969 and I also have a solid state version.
I call them my portapotties.
i have the Italian made PAL version of the portacolor from 1968, one of the very first color sets sold here, it does produce good colors apart from the lack of DC restoration and the coarse dot pitch, the CRT in mine is still in good conditions
They made them in Italy as well? Did they follow the US design or the German Kuba/Imperial design?
@@mjouwbuis the kuba\imperial version was actually a rebranded italian CGE portacolor.
Telefunken also sold them in a different more modern cabinet, but they were italian made too
the chassis is still all-tube but quite different from the US chassis, as it mostly uses european noval tubes
53:05 . . . It was worth the wait right to the end of the video! LOL
I learn something new. I wonder how many other radio and TVs suffer from this
These were very popular & very small and light for all-tube.
I read somewhere that as little as 3% lead stops tin whiskers. Maybe brushing the terminals with some 60/40 solder could stop the whiskers on them?
Dust is good, it comforts me at night. Tin whiskers are bad.
Painting is a good idea. An easy way to clean them up is to use a torch on them.
The whiskers only grow when the metal reaches adolescence.
They were still making tube TV sets as late as 1972? Crazy!
Up to 1978
Reminds me of when I picked up a 27" tv or something like it as a kid and the crt was bad. I was all psyched to have the biggest tv in the house in my room, but it was horrible to watch due to the incredible blooming on the CRT.
Sounds more like it was a high voltage problem than anything wrong with the CRT.
@@Inflec so low HV can mimic that appearance?
@@volvo09 Low high voltage is the primary cause of blooming.
Just curious, how did you end up with the TV?
That story sounds oddly familar. Got a 68cm/27" rebadged Salora as a late teen and was all excited to have such a giant TV (and stereo too)... right up to the point I found out it had a ridiculous amount of hours on it (should've peeked at the insides beforehand) and the tube was shot. I had to have it set to 1/3 brightness with contrast pretty far down, otherwise the red would start blooming like crazy (easily 3cm/1.2" red shadows). Still... it lasted me another year or so without any other issues before I could replace it. Seemed like the previous owners ran it daily for 12+ hours or something in the ~18 years before I got it for it to get that bad, and the insides definitely looked like it
14:43 that's a pretty blue cockring right there hanging about X'DDD
I have heard it's relatively easy to add a DC restoration circuit mod to the Porta-color sets. Makes you wonder why Generous Electric left it out in the first place.
Good morning shango066
A high-hour porta-potty ? Funny, my grandpa always called his a porta-crapper ! That’s what I call the porta-potties you see at events and construction sites.
19:17 I got "pwong pwong" , you got "crickle crackle"
I've always wondered if waving a propane torch across the affected areas would destroy the tin whiskers.
I should think so. They are so thin that the surface area is extremely high. Like steel wool. But it won't prevent them from growing again. From what I can find, neither will paint. They should just make them from regular steel or aluminum. They probably chose the alloy to prevent corrosion.
Paint won't completely stop whisker formation but it will slow it significantly.
It would, but they would regrow after some time (years?). They grow because the plating is from pure tin and there is mechanical stress on the element.