Archive for the ‘Radio, Television entertainment’ Category:

2017-12-15 Olympic 860 Radio Capacitor Replacement 

I was the only bidder on a lot of three radios, one of them is an Olympic model 860 AM transistor radio.  This radio uses four AA cells for a total of 6 volts DC. Overall the radio is in good condition – no chips or cracks.  I powered it up and if I turned

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2017-12-15  Royal 500 Capacitors Replaced

From FB group Electronics Hobbyists, regarding the Zenith Royal 500 radios. Clyde Hendrickson  There are two 50 uF, 10V electrolytic capacitors under the battery holder.  Replace them with 47 uF, 10 or 16 volts. There is also a smaller capacitor next to the other, it might be a 3 uF, or a 16 uF, 10V.

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2017-12-04 Converting Tube Set to Transistors 

From FB group Vintage Transistor Radios  I’ve considered converting a tube set to transistors.  The problem is getting tube bases that aren’t sharp and breakable glass.  Some old electronics used tube base type plugs for relays and plug-in modules. Then there is the problem of dealing with the higher voltage.  Transistors can handle 300V, but

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2017-12-03 AM Oscillator To Replace Aux Input

From FB group Vintage Transistor Radios  For the last few months, ever since I started experimenting with oscillators on the AM broadcast band, my attitude towards auxiliary audio inputs has changed.  Earlier I thought  that it would be convenient to have an aux input.  But I was leery of making changes to the collectibles radio

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2017-11-19 Royal 510 PCB hairline crack 

For FB group Vintage Transistor Radios  Speaking of fuzzy garbled audio…  I won another auction for a Zenith “Royal 510” which I’d never heard of.  It turned out to be a Royal 250.  The seller got no bids at all, so with less than a minute left I bid the minimum ten dollars. I got

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2017-11-15 Zenith Royal 755 Vintage Radio Excellent 

From FB group Vintage Transistor Radios  I’m flabbergasted.  I received the Zenith Royal 755 I won last week – auction link is below.  the seller said repair/parts, but I’m amazed at how good a shape it’s in!  I suspect that it was in storage for most of its life.  The leather case is nearly new,

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2017-11-04 Zenith Royal 500 Fixed Part Way

I got another Zenith Royal 500 at auction, I think it was $20 but the shipping cost a lot.  I got it out and tried it out.  I found the battery contacts were in good condition.  The battery compartment was missing the cover.  It came with a leather case, so that will stop the batteries

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2017-08-15 1950s Astor 7 Transistor Radio

2017-07-13 Don’t Use Your Original Remote Control 

From FB reply My remotes seem to go bad all the time.  Batteries low or dead, battery juice leaking on the circuit board, broken wires from falling off the table, getting sticky or worn, etc.  I try to minimize the wear and tear on the original remote.  I never use the original remote, I use a cheap

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2017-06-19 FM Receiver Kit  With Hex3653 Chip

I ordered these kits Several weeks ago and they finally arrived today.  I opened up the package and found several parts rattling around loose in the box.  I found one bag had been cut open, and whoever slit it didn’t tape or staple it closed. I got to work and assembled one of the kits

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