i got a luxman k-03 cassette desk here thats been beat to hell with ups twice first time i had to hammer dents out of the case and repair cracked boards, and again and its developed a few weird issues after running for about 30 min belongs to an engineer i worked for in ontario years ago it sure has been through alot
This SL20575 or it's equivalents are available, but as Dave has said the cost of it to your door would be too much. The amplifier section still works, so i would just feed a tuner into it if you realy want to hear the radio. Sometimes you hit lucky with these older receivers, but not this time. The higher end models are worth spending on, but not the entry level ones.
I'm 65, I'd need a microscope to read that schematic. If you got that IC from China it would probably be a fake and take 2 months to get there. Good video, thank you. As a hobbyist, I'd own it and try to get an IC for personal satisfaction but not for a cheap customer. I live in Thailand and radios are useless to me here because of the language, I give them away after fixing them.
I expected the audio amplifier to be the dead thing. But an odd i.f amplifier chip is an odd thing to fail. If the owner sends off for a chip and sends it to you, it might be worth it. The owner is a tight ass, you seem to have a few customers like that.
This belongs to the Facebook seller I got the 10.00 laserdisk from so he would be selling it. Not going to put much money into something that won't sell for much. I make very little on these type of jobs and rely on the penny or so i make from the ads that don't get blocked. The ad blocking viewers make me nothing.
Quasi complementary use 2 npn and a blocking capacitor to block the DC component present in the output as it floats at roughly half the b+ rail voltage.
I'm not used to 70'shi-fi equipment assembly style, but it is terrible: lots of wires going everywhere, many components added after initial design to fix issues and soldered wherever they could fit, minimal marking's on the PCB, very few (if none) test points...
@@marka1986 Yes, sure components leads can be used as test points, but in early 90's, PCB were designed with nicely laid out and clearly labelled test points you could hook up instrumentation to. They say older equipments were more serviceable, but things from the 70's are indeed a nightmare to work on: with notable exceptions, the rule was mostly spaghetti cabling, with multicoloured cables going from everywhere to everywhere (PCB's were manually designed so cables going to the same components, e.g. a switch, would end up in sparse locations in the board). Also the minimal use of IC's required many boards cramped with discreet components even for simple equipment (like this amplifier with integrated tuner).
Not since 2003. No money in it anymore. By 2003 wages in the repair industry were down to about 2k a month. In 1990 wages were closer to 4500 a month to repair electronics.
@@12voltvids I left a comment on another video you posted, looking for a guy in NC To work on a Sony TR 1000 super sensitive radio, would you like to look at it if it's not worth fixing, I don't mind paying you a reasonable fee for looking at it.
