shango066 needs to develop a 2nd RU-vid channel where all he does is give his opinion on infomercials. Sort of like Mystery Science Theater 3000. I'd definitely subscribe to that.
The carbon soaks up the incoming fuel charge, kills the spark off the tip of the plug and holds the valves off their seats. Lose - Lose - Lose situation unless it's given a quality carbonectomy. But you already knew that. LOL Fun bonus video. TY Sir! As for the mumble bubble guy at the end. Just no fix for that.
You can use a steel wire brush on an angle grinder to clean the carbon in the cylinder, just make sure the piston is at top dead center. Carbon inside the combustion chamber would increase compression but it would lose a lot more power because the carbon puts a lot of friction on the air-fuel mixture flowing trough, it also can lead to knocking, the carbon surface ignites fuel easier and also gets much hotter.
Fantastic data collection on your part. Looking forward to seeing what fails next. The bonus mower clip was a nice throw back to some of your older posts - watching the blade spin with no deck guard cracked me up! Thanks for sharing.
That is a Snapper mower. The grass chute on those was metal or plastic and it went up at about a 75 degree angle from the grass exit point on the deck. It must be fun to watch the rooster tail of grass coming out of that shoot with no plastic or metal on it.😅
Carbon will increase compression a little but will also glow red hot and possibly throw off ignition timing(hot spot). The scoring is'nt that bad. I think you probably have valve problems but new replacement parts for lawn mowers cost more than a new mower. You could recut the seats and lap them if you have the right tool. Measure spring length but probably get new springs regardless. I thought gas lawn mowers were illegal in CA. Oil burn may be worn out guides. "Cold War Motors" has repaired burst cylinders with JB Weld and run engines. See Thursdays vid. They are the experts at the zero cost rebuild.
Cold war motors is a great channel. The straight 8 showdown was awesome. I love that old equipment they have. I'm pretty sure Shango;'s day job is as an auto mechanic.
No the cylinder is extremely worn and scored. The valves are Carboned. The Briggs Lhead engines are trash. If you get a spec of carbon stuck on the exhaust valve seat it won't start. Carbon will kill the fuel ratio. You need a syth or a goat.
This really takes me back to my childhood when the TV repairman would visit, dressed in his uniform and carrying his tube caddy. I can see him now... bent over, head in the back of the set, which is pulled out from the wall. And of course his pants are way down in back exposing his butt crack. I think dad might have become concerned though it the guy came back this often.
Our field techs were always polished and knowledgeable. But the crack was on the plumber and the Maytag men. That crack, my friends, is what separates us from anarchy.
A little more toward the energy costs. This old set is doing well considering the components would have all aged sitting around anyway. Considering this set is on 14 plus hours a day and most TV's in the day were only run a couple of hours in the evenings, this one is doing well.
A couple hours? My parents and grandparents turned on the idiot box the second they got home every evening around 5:30 and didn't turn it off until 10:30 or 11 and sometimes later. That was in addition to the couple hours every morning before leaving for work.
I learn soooooo much from watching Shango. Variety. And ... a new word __________face. I will use that. Pelosi. BTW, is there data regarding the realistic lifespan of color CRT's - in 1968? What is the threshold for unviewable? And ... WTF?!? 44:57. I thought Cali was in a horrific drought. Further ... FWIW ... my lawn mower is 26 years old. Still runs great. B&S motor, generic frame. Maintained. Only "fix" was a new carb two to replace the plastic one it came with. Had been running was rich, fouling the plug. Old mechanics trick: use a Bernzomatic propane to burn out the old carbon on the plug. About 5 minutes to get it red hot. Now, fine.
Overall I'd say carbon build up will decrease performance. The slight gains from increased compression are offset by how the carbon will slow the flow in and out of the cylinder, increased blowby at the rings and valves.
50:00 == BRIGGS & STRATTON engine I had one -- 4-Stroke and it was consuming a lot of oil - and was blowing so much smoke it set off my Smoke alarms and the neighbor's smoke alarm. And it was rattling as the piston rings were shot. The Frame that the engine sat on was in excellent condition/ Clean and without rust - as I had earlier painted the underside with bituminous paint - and the mower was pressure cleaned after use - following an engine cool-down for 40 minutes or so. I gave it away to a nearby neighbor who is retired and repairs lawnmowers to earn some extra cash. I bought a near-new Mower with a BRIGGS & STRATTON 190cc for $100 at a pawn shop - it works great - is reasonably quiet and starts first-time every time. To have the engine replaced on the mower I have away - It was estimated that an engine replacement would cost $300 - $350
I used to fly airpains out of Upland, and in the rental contract Torrance Airport was off-limits except in an emergency because they got so many complaints about the noise.
We had a Magnavox TV new in 1974, and the picture tube lasted almost 7 years before it became too dark to watch. (Serviceman boosted the tube, helped for a little while) Then we got a new Magnavox in 1981. The tube had to be replaced in 1985, (( (Losing major red and blue gun emission) luckily my dad bought the 5 year tube warranty. (It might have been free) Our tv's had heavy usage. I could not tell you at what point we considered it "unwatchable" or not enjoyable. Great video!
Until watching youtube videos I didn't realise CRTs wearing out was a thing. We had a cheap 15" TV branded 'Sentra' that was bought around 1988 or 89, we were using it daily until about 2005, it probably had more than 10,000 hrs on it, the plastic buttons on the set were physically worn down, and the print on the remote completely worn off but the picture was still bright and clear, it was only replaced due to it being too small and only having RF input. I took it to the dump, still working perfectly when I moved to my new place in 2017 (I feel a bit guilty about it!)
@@chickenfizz Sometimes you were lucky. My parents had Tesla TV built in 1984 running till 2015 when it was changed due to switch to DVB-T (it was switched in 2008, but cable broadcasted in analog much longer). During that years I sometimes adjusted RGB levels, at the end green was wear out quite a lot, but it was still adjustable.
I read an article earlier about a factory down in Georgia called Western Electric that is making vacuum tubes again. I was wondering if you have tried any of them , and how they performed. Glad to see stories of technology ( even old ) coming back to the US, and the people doing it.
I lost my wife to cancer a couple of years ago. It was a very hard time in my life, however up until the cancer hit, we had a great sex life for 51 years. Did not need little blue pills. Neither did she. I think it was just the pure love and joy we had when with each other that kept us going. Today, after a couple of years of morning, I still have no desire to find another mate. Ah well I am over 70 now, and spend my days watching Shango and other electronics type videos. They serve my craving for days of old, when I was a soldier sitting in the back of a radio teletype van while little yellow people tried to drop mortars on me, and shoot at me when I was running wire through the jungle in that little far away country known as Vietnam.
Great content here. I have basically given up trying to listen to politics or news anymore. Canadian here so I get what you are saying about American politics and I think we just have it a tiny bit worse with our narcissist Prime Minister. I don't think I have regular cable since 2014/2015 and just been internet only since then. ON the lawn mower you could try lapping the valves. Our family runs some pretty old mowers and I have seen my father do that procedure quite often. You could find lapping compound for under $10 and my father uses a glorified lapping tool which is 2 suction cups of different sizes on a handle. That does seem to improve some compression but not much. Till this day I still have an irrational fear when it comes to CRT TV's that I have totally forgot about until watching your channel. Oh well I have the safety of watching it on video.
I remember now. This is a TV 📺 set that you’re daily driving, and documenting the faults as they happen. Ya started this test a few months ago. Looks like 👍 this set is holding up well. Again, your friend, Jeff.
Let's see that crepe erase. On a side note I watched one of your videos on a Sony comercial trinitron and I have sort of a rare beast it's a Sony CVM 1720 comercial trinitron I would love for you to find one and do a video on it . It's probably not somthing you like ,but the insides are very interesting especially the flyback it's incased inside a clear plastic shell
Interesting too watch the experiment of a daily driver tv set from the 60's. The lawnmower original engine, it's time is limited as it is much wear on it unfortunately. Great video Shango066 😊👍
Very interesting experiment to see what starts to fail on a new old stock TV set from the late 1960's, appreciate your diagnoses and repairs on this TV set. You mite want to adjust all the 4.5 mhz IF sound coils to get rid of that video buzz.
Would love to see that mower get a cheap tuneup with a hone and new piston rings and valve lapping. It will probably last longer than the shitty plastic new ones
😂 I held it together until "Check in with the previous guy about Adderall. It would help." Now I can't stop laughing about sphincter face. Thanks a lot! 😮😅😂😂 2500 hours on the PB set at 4 hrs a day use means 625 days of use. Thats not very many hours for the CRT to be that deteriorated. Glad the picture came back to an acceptable level. I wonder who made the CRT? Really enjoyed the mower engine portion as well. I have never seen any engine with that much carbon. I have a Series 500 E Briggs engine (OHV) with some sort of valve issue as well. Zero compression. Suspect a rocker arm worked loose or the stud is stripped. Talk about crappy. Plastic carburetor. I picked up another almost new copy of the mower that that engine is on, and it has a broken rod. Maybe if I put a blue pill in the crankcase, it will heal?
Hi Shango066, it's not that often when we get to see one of your double features (although I could do without the infomercials and Obamination II). Those first generation rectangular color CRTs were not high brightness. They really had to be viewed in a room with curtains over the windows during the day. 2,400 hours is a lot; at least a year's worth of daily TV watching in the 1960's. Back in the mid 1970's when I was a TV Tech, it was common for people that insisted upon a high brightness/high contrast picture, to have the CRT completely dead after 2 years so, I'm not too surprised your emission has noticably dropped. The engineering department that designed that set obviously failed basic component placement. Rule number 1 with electrolytic caps is, you never place them near heat generating components (like tubes and power resistors) so, not surprised some are already drying out, that and the cap age. I was hoping you would open the high voltage compartment to see how the flyback is weathering. I considered that horizontal output tube defective during your initial checkout of the TV. I'm sure there is quite a buildup of dripping wax by now. It looks like the old Briggs has seen a hard life. About the only thing you can do with all that cylinder scoring is, clean things up and run 20W-50 motor oil. All that white build up on the spark plug and exhaust valve is due to water in the gas caused by the ethanol. You can't run car pump gas in those engines, the alcohol they put in the gas damages the carburetor and exhaust valve seat. Unfortunately, ethanol free fuel costs 50% more than the 87 octane crap gas.
@@v12alpine Ethanol outlawed in California? Wow, that's evil since there is no emissions difference between the 2 fuels. I have been working with small engines since 1970 and have observed the alchol/gas fuels damage carburetors in as little as 2 weeks. The alcohol absorbs water which quickly corrodes the aluminum/pot metal carburetor body. I also thought about mentioning adding water to the ethanol/gas to separate out the alcohol but, my post was getting too long.
I like that you redid your tests on the CRT while in there. Very curious to see when it finally shows as mediocre on the tester... 5k hours? It's certainly hanging in there, capacitors isn't bad at all.
The best way to detect filter hum bars is to turn down the color level to a black and white picture. Then slowly turn down the brightness and you can see the hum bars more pronounced . FYI,
YES, Always discharge caps before using ANY China made ESR meter. Even 12v it does not matter the voltage it must be zero when connected. I lost mine so you guys do have to lose yours. Thanks for all the videos. You rock !!
In response to the carbon buildup compression question, it actually does increase compression. That was actually used by some old dirt track racers to cheat the max compression rules by just burning shitloads of oil through the motor. A side effect is the carbon keeps trapped heat meaning the engine is susceptible to dieseling after you shut the ignition off
This has been a really cool experiment. Good call with the capacitors. I'll be a "Know it nothing" and say that the damages to the cylinder walls was done by carbon braking off and getting stuck on the gap between the piston and cylinder. The carbon in MUCH harder than any metal and gouges the cylinder in long vertical streaks like that. Lack of oil would have metal transfer between the piston and cylinder which would be far worse and lock up the engine in short order. The carbon formed from the oil bypassing the rings due to "normal" wear. Carbon build would increase compression, BUT not evenly. You would loose performance as an engine is designed to flow a certain way like a musical instrument. Even 1/64th of an inch angle in a valve effects performance in high performance application. Although Milwaukee's "other" motor company (B&S) is not high performance, you DON'T want to raise compression. It won't make up for wear in the rings, it will just bypass more past them. These engines get SO HOT anyway that pre-ignition is already an issue.
I don't remember if you talked about this in regards to this set, but is the mains voltage OK for it in its current location? Being a '60s set, it might have been designed for 110V and now it might get 120-130V. Not an issue for the capacitors, but slight overheating to the CRT and other tubes might cause faster degradation. Might be a good idea to install an autotransformer or even better, an adjustable mains regulator to dial in to its designed voltage.
Well 110v is a bit low I think even for the 60s. It was probably made for 115v and yes, he installed some kind of bucking transformer which takes it down to something around 112v.
@@TapesNstuffS Good news, it would be bad if it degrades quicker than it should, due to overvoltage. I'm in Europe, I don't know what was the official nominal mains voltage in the '60s US, but old stuff here which are multi-voltage usually has 110/220V selector switch on them. So I thought the nominal was probably 110. Nowadays it's 120 if I'm not mistaken.
@@mrnmrn1 That's right, 120v is the norm but there are many exceptions. Big appliances like dryers, electric stoves, and big heaters run on 240v but at 60hz. Many smaller devices using standard power supplies can accept a range between 115v and 125v while devices with switching supplies can typically accept 100-240v at 50 or 60hz. (Canadian perspective)
I guess, that the emission of a brand new CRT stabilized after 1000+h on 80% and stay here, until the lifetime is gone... the loss of emission is not "linear" with the hours, I think.
@@volvo09 What's funny is Tesla had a similar issue with the displays in the Model S and X and few years back. The entire screen had a yellow bezel around it from the adhesive
I wonder if the tube will get burn in from that slightly collapsed vertical in the long run. Makes you appreciate how CRTs were advanced and could last much longer in the more modern "low glow" picture tubes.
“It’s just common sense to check if someone’s a felon or an abuser before they buy a gun”. Boy,this guy is clueless. Most criminals buy guns illegally without a background check. And by the way Joe,I believe we are already doing background checks on people buying guns. “Eliminate gun manufacturers from minimum liability”. Yes,because a manufacturer is responsible for how the consumer uses their product. It’s not the individual that’s responsible. Maybe we should hod GM responsible if a drunk driver uses his Chevy to mow down some pedestrians in a crosswalk.
I would expect back in the day, the engineering dept on this stuff did some sort of life tests like this. Although, one wonders about consumer things. I work in heavy off-road and industrial electronics and for sure we do things like this. Said data probably gets erased 7yrs after the last production. You are not likely to find this sort of test data anymore unless it maybe was published in some trade journal back then or the mfg had it in their design guidelines books.and the last copy is moldering in some retired EE's basement, haha.
Hi from england, Your mower probably suffered valve seat damage the first time the valve stem prevented the exhaust valve from closing, if that happens the seat burns up and compression is lost. It will run for a while with scored cylinder walls. carbon causes pre igntion from hotspots which is bad, and if on the plug loads the HT and weakens spark.
37:00 Steelman? Didn't they make tools? Flashlights and pocket knives? Great video and very interesting. That 80 microfarad that had poor ESR was an important filter. Set looked very good like when you set it up zero hours after you bridged in the new ones. Stay well!
Back when Briggs discontinued its side valve engines for push mowers I got a new short block assembly for $40. My two original engines haven't died yet though.
the QUANTUM engine is known for dropping exhaust valve seats, and when that happens, the engine is for the most part done. I have tried many different ideas on getting the seat pinned back in, but it will not stay in the block. both intake/ exhaust seats are pressed in at the factory, and seats that fall out are due to engine overheating, just like the plastic cam gear/ lobes will get out of time, and the cam must be replaced. carbon build up will increase engine compression, but if you want real engine compression just remove the compression release yoke on the cam exhaust lobe. another big problem with exhaust valve guide wear is due to running regular grade gasoline with 10 to 15 % alcohol. to stop the wear most premium grade gasoline does not have alcohol in the gasoline. this also will stop the chrome plating on the piston from being stripped off causing cylinder scoring/ galling, from the aluminum cylinder coming in contact with the aluminum piston, that was originally chrome plated. alcohol is real good at stripping oil off of the internal engine parts, and does a great job of degrading the engine oil .these engines do not have any oil filtering , so frequent oil changes are needed for engine longevity.
Shango I noticed the indicator lights on the channel select aren't lit up is that to Sav-On the power transformer running the TV so long nice Packard Bell beautiful picture
It could also be that those filter caps just don't have good ESR at the 100khz that the capacitor wizards measures at, because of dielectric loss due to worse materials and chemistry than modern caps.
