Frank's Place

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@raymondkuipers8669 2 күн бұрын

Waiting for next video ,pump up volume

@FranksPlace-jk7pj 2 күн бұрын

@@raymondkuipers8669 I'll see what I can do.

@videolabguy 11 күн бұрын

Great job, Frank! With the old transistor radios that have zero sound, first thing I always check is the earphone jack. 90% of the time, someone shoved the wrong plug in them and bent the cutout switch. Or the switch terminals are corroded. Did you check the voice coil wires behind the terminal board on the old speaker. Some times those are broken and, if you are careful enough, can be repaired.

@FranksPlace-jk7pj 11 күн бұрын

@@videolabguy There is no continuity in the speaker. I've hung onto it and might attempt a repair sometime.

@Diesel735 17 күн бұрын

Nice Job! Tune into some 'Judas Priest' and turn it up loud.

@FranksPlace-jk7pj 17 күн бұрын

Judas Priest, wasn't he Glen Miller's drummer?

@yupimbackk 18 күн бұрын

😀😀😀😀

@briang.7206 18 күн бұрын

I have 2 1960 models It had bad capacitors. One of the electrolytic capacitors i had a difficult time removing it. I unsoldered both legs but could not pry it out..turns out it has 3 legs.

@FranksPlace-jk7pj 18 күн бұрын

Fortunately, the radio that I have still had a really nice tone so I didn't bother to replace the electrolytics. I can see how they would be really difficult to replace though as they are really in tight. It takes, patience, a steady hand, and good magnification to produce good results.

@steve732 23 күн бұрын

More details please on the technical repair Frank

@FranksPlace-jk7pj 23 күн бұрын

@@steve732 Other than restringing the tuning indicator dial and replacing and painting the metal piece on the cabinet, there were no electrical problems with the radio.

@yvonmalenfant8999 Ай бұрын

Nicely done Frank! Keep it up!

@t1d100 Ай бұрын

Thanks for the video. Great find on the fault. I do think that I saw a bit of distortion and wobble on the scope trace, after the repair. You might want to look at that closer. Maybe a component that supports the amplifier component got stressed? HTH. Cheers.

@elmofeneken4364 Ай бұрын

Really enjoyed the tour of the museum Frank. It was fun to see all that stuff. I wish more people would visit museums like this to see how far we've come in media instead of just sitting in front of our computers or staring at our phones. Great video.

@FranksPlace-jk7pj Ай бұрын

@@elmofeneken4364 Glad you liked it. If your ever in the Vancouver area. They're open Sundays year round.

@JohnDoe-es5xh Ай бұрын

I thought, RCA was a true manufacturer. But it seems, it was only a sailsplatform for goods made by Asians. Radio Corporation of Armorica, lol

@FranksPlace-jk7pj Ай бұрын

They did originally manufacture radios but this was probably such a cheap set it was more profitable to get a Japanese company to manufacture it as they had cheaper labor. Higher values items like TVs continued to be made by RCA until at least 1986 when they shut down their last USA Television plant.

@adamrichards3174 Ай бұрын

RCA was an American manufacturer of many different kinds of electronics from the 1920s until they were bought out by GE in the 80s (existing in name only after that). Interestingly, an Asian offshoot was founded by RCA in the 1920s... the Japanese Victor Company, aka JVC. JVC, for obvious reasons, parted ways with RCA during WWII and has remained their own entity since then.

@alialmahanawi8409 Ай бұрын

👍

@t1d100 Ай бұрын

👍👍👍

@user-dv1lc6br5s Ай бұрын

I like your trouble shooting methods. The way you explain things is clear and easy to understand. Nice job on the Zenith!

@FranksPlace-jk7pj Ай бұрын

I'm glad you find them easy to follow.

@EricHarvey-m4u Ай бұрын

Your talent is in cookinYour expertise in cooking is visible every time. Keep inspiring the Khal community. ++++++++++++++++++++++++

@RamPravesh-cm5cq Ай бұрын

Beautiful🌹 and🌹👍

@throttlebottle5906 Ай бұрын

it may have got hit with static electricity, as they were pretty fragile.

@FranksPlace-jk7pj Ай бұрын

It came out of a transistor radio push pull audio stage so I figured it just died due to thermal runaway, but who knows.

@johnrehwinkel7241 Ай бұрын

I think the middle piece is the germanium crystal, and the outer two are the contacts onto it.

@FranksPlace-jk7pj Ай бұрын

Interesting concept. My thought was that the ring was maybe the base which held the Germanium piece on place and the two wires were bonded onto the Germanium pice on each side. It would be interesting to have a look at the original Mullard engineering documents.

@nudebaboon4874 2 ай бұрын

Thanks for that, very interesting.

@glenmartin2437 2 ай бұрын

Thanks. Tough to take these apart without destroying them.

@dandaniels851 2 ай бұрын

Now make a crystal set radio out of it please 😉

@FranksPlace-jk7pj 2 ай бұрын

To quote Dr. Leonard McCoy " I'm just a simple country doctor Jim, not a miracle worker."

@dandaniels851 2 ай бұрын

@@FranksPlace-jk7pj You can do it ⚡️✊🏻🤠

@chesterhackenbush 2 ай бұрын

As a schoolboy, I loved playing with OC71 and OC81 surplus transistors back in the 1970's... the bullet shaped glass OC71 was my favourite as you could scrape off the black paint and convert it into a phototransistor - which were much more expensive to buy ;)

@FranksPlace-jk7pj 2 ай бұрын

The transistor came out of a Perdio transistor radio from about 1960 that was completely smashed and unrepairable.

@BoneHead-Gaming 2 ай бұрын

telling me what youre going to do before you do it makes me feel impatient, instead.. you could show us first and say here ive done this and that.. just my 2 cents.. Cool content.

@beakytwitch7905 2 ай бұрын

The white gunk used to be transparent gunk, and was replaced to stop people using the transistor as a photo transistor. Interesting to see this. Thank you. 😊

@FranksPlace-jk7pj 2 ай бұрын

Thank You for your input.

@FranksPlace-jk7pj 2 ай бұрын

@@beakytwitch7905Its like silicon caulking.

@tomj4506 2 ай бұрын

4 lead transistors became popular in the silicon days for RF & IF's It does go to GND. Remember changing many on RCA & Admiral IF's. BTW you should get strong stations without the RF amp & a lot of QRM unless its dead shorted. LFOD !

@FranksPlace-jk7pj 2 ай бұрын

Yes, when I had the rf transistor out it did get strong stations. With it in, there is a lot of QRM but the sensitivity for a 1950s transistor radio is amazing.

@BadChizzle 2 ай бұрын

I want to be there. I’m just sayin… ✨😳🎰

@FranksPlace-jk7pj 2 ай бұрын

It was such a nice color I couldn't resist taking a shot of it.

@GuessWho-pq1or 2 ай бұрын

Again. Wow....Frank. You are the master of the universe!

@FranksPlace-jk7pj 2 ай бұрын

I try

@Diesel735 2 ай бұрын

Burn your tongue..... Then burn your butt?

@WECB640 2 ай бұрын

The leaky transistor may have tin whiskers inside. These are germanium, not the silicon variety we use today. Their bias is lower as well. 73 OM

@FranksPlace-jk7pj 2 ай бұрын

Tin whiskers? I didn't know you could get them in Germanium transistors. Changing them out with those Japanese transistors sure improved the sound quality though.

@WECB640 2 ай бұрын

@@FranksPlace-jk7pj On the AF output, you may have enough bias to put the silicon transistors into AB1 mode. This is usually regulated via a thermistor on the board. (I don't see one on the schematic in the video though.) I don't think you can replace any of the other germaniums though without gain loss. Germaniums are very sensitive to bias and can easily go into thermal runaway which is why the thermistor is there. It also has a very slow AGC affect in the audio because it is thermally controlled. The 4th wire on the OSC transistor (and RF amp if there is one) is a case GND. These are often the same transistors found in the Transoceanic series. There are some amazing pictures taken with an electron microscope of the insides of early germanium transistors showing the whiskers. Shango066 on YT has several amazing videos on the Zenith Transoceanic receivers. 🙂

@hestheMaster 2 ай бұрын

This is the kind of radio with a special ballast tube. Philco number 33-3389. It was put into a special octal socket with two keyways, one for 115 V and the other for 230 V. I see the wiring diagram for the ballast tube on the schematic and looking at it is actually only used as a jumper for the connections for 125 Volts. It is needed for 230V when you place it in the right position for that voltage. If you have the ballast tube and it is dead check the ordinary wire connections in the base for continuity. Pins 2,3, and 7. Then you can redo the speaker next. But not this way, yikes. Rotten insulation on many wires to be replaced. And don't modify the chassis to fit a too large PM speaker!

@FranksPlace-jk7pj 2 ай бұрын

My hope is to repair the speaker cone and put it back in the radio, as everything on the speaker assembly is good except the paper cone.

@OldBaloo33 2 ай бұрын

Very interesting radio. The transistor symbols on the schematics look strange. I newer saw these symbols before. The ГТ-309В transistor is a germanium one. The "ГТ" means "Германиевый Транзистор" (Germanium Transistor) in Russian. The silicon transistors are marked as "КТ" ("Кремниевый Транзистор" - Silicon Transistor). Thank you for the great video!

@FranksPlace-jk7pj 2 ай бұрын

The Soviets must of switched to the international symbol for transistor later in the 70s when relations with the west were getting more relaxed.

@hestheMaster 2 ай бұрын

The D in 500D stood for distance reception indicating the improved RF stage and featured their inverted cone speaker but was not put into all model of the 500D's for some strange reason. I think they ran out so if you have trouble you could replace it with a regular cone one if it is bad. If it says "long distance" on the outside you were more likely to get one with the inverted cone. On a vintage transistor radio the first thing to do is a visual inspection of the circuit board to first eliminate a no sound condition. Then go into it more. Chalk it up to a learning process for the future. Old PC boards were poorly made including traces. I learned some things here ( always good!) as I have a 500 that works but poorly. Thanks Frank! Steve

@FranksPlace-jk7pj 2 ай бұрын

The radio works like gangbusters now and the sensitivity and tone is excellent. I can receive 5000 watt stations in the day from the nearest major city 150 miles away.

@hestheMaster 2 ай бұрын

Most guys don't know this but the shaving cutter head and stationary blade cover are matched sets so don't interchange them or you will experience lower shaving quality for a week or two until they seat properly. They sent you the wrong set of replacements by the way. You need the SH30/52 and always request the manufacturer's sealed box and not just the sealed placard they come in. Some unscupulous sellers actually do that!

@FranksPlace-jk7pj 2 ай бұрын

They sent me the blades with shaving cutter heads as you can see but I didn't have time to wait for new ones, hence the modification. Good to have the right part number for next time, thanks.

@zakaria1514z 2 ай бұрын

Very illustrative ty for the information

@rlysitt 3 ай бұрын

I also have never seen a speaker like that.

@FranksPlace-jk7pj 3 ай бұрын

It seems to be only used in the 500D, the earlier 500's have a conventional speaker, I don't know if they used it again in any model after 1958.

@johnl2727 3 ай бұрын

This radio was made by Arvin.

@FranksPlace-jk7pj 3 ай бұрын

I just purchased another one last week, (the green one of the series) and it works. Arvin smartened up and made a bigger battery compartment for this one as it takes a standard 9 volt battery.

@daleburrell6273 Ай бұрын

0:19...well, "if it doesn't WORK- then it doesn't EAT!!!"

@FranksPlace-jk7pj Ай бұрын

@@daleburrell6273 No battery juice.

@DonnyHooterHoot 3 ай бұрын

In Soviet Union you didn't have radio, radio had you. Cool viddy!

@Diesel735 3 ай бұрын

Interesting.

@anthonyclark2873 3 ай бұрын

That's a K-Mart Special, too. A new spark plug, a pump gasket, and new oil would be doing the most. Otherwise, just clean the mower deck, and spray with WD-40. Sharpen and balance the blade. Check wheels for wobble and nuts for tightness, along with the rest of the frame. Many of the mowers you see on the side of the road can be fixed so easy. Pump Gasket, or a varnished bowl, needle and seat. This is all before a rebuild, and 40 more years.

@LionsTigersBears 3 ай бұрын

Gas stabil works too for storing away into the winter months

@LionsTigersBears 3 ай бұрын

WD 40 is kinda both. Its a lubricate. But at the same time its flammable to start the lawn mower...

@strong40 3 ай бұрын

You should probably do that before you park it for the winter

@superduder 3 ай бұрын

Love those older Briggs and Stratton engines. Hard to kill.

@Diesel735 3 ай бұрын

Not a bad idea WD (Water Dispenser) Mineral oil lubricant. Also works great to clean fuel injectors. Try to find 'Non Ethanol' fuel for your mower and you will not have any issues especially after storing.

@troytaylor1913 3 ай бұрын

I was given one of these with no damage or missing parts and it's untouched. It was working they say. I don't like working on this type of assembly but I got to do it. I have a National shortwave I have to do too. I'm just spoiled from working on printed circuit boards.

@troytaylor1913 3 ай бұрын

I got to hook a digital frequency meter to the RF generator it is an old Heathkit tube RF generator but it still works great.

@FranksPlace-jk7pj 3 ай бұрын

Good luck.