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#1
04-28-2021, 05:02 PM
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Zenith Royal B47 schematic
Hi all. I need a schematic for a Zenith Royal B47 schematic.
Not going to put down $7.95 plus shipping for a copy of the manual as I see in my Google searches. Amp needs work as it uses a 2SC735,2SA562 and a 2SB482 as driver configuration.. Has anybody seen this configuration.. Add more.I got it from the shop years ago.I believe that somebody plugged a wall wart into the earphone jack or wrong polarity at the tip of the regular phone jack style power plugin.. As I found that both output transistors are blown out.The tuner sect works fine. Thanks in advance . Last edited by centralradio; 04-28-2021 at 09:10 PM. 
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#3
04-28-2021, 09:03 PM
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Did you read the post first ..Thanks anyway..
Quote:
Last edited by centralradio; 04-28-2021 at 09:11 PM.
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#4
04-29-2021, 05:59 PM
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Quote:
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#5
04-30-2021, 10:39 AM
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No problem nasadowsk.Sorry if I offend you..It happens to all of us..I notice I did the same thing by posting this radio in the tube radio section..
If it was a prewar tube radio .It would be fixed by now.. Have a nice weekend.. BTW ..... NOTE to Mods.Can you move this topic into the transistor radio section please..My bad.It should of gone there..Sorry about that. Quote:
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#6
04-30-2021, 03:43 PM
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Its in Sams TSM145. I dont have it. TSM were separate from the regular
Sams series & not many got them. They cover quite a few small radios in one volume. Sams also had other separate series for specialties such as MHF ( modular HiFi ) , AR ( auto radio ) CB (CB) etc. The output design is quite typical. Fix almost always is change all three transistors, check low ohm resistors in output & change the speaker coupling cap ( usually between 220mfd & 470mfd). When you have audio outs & drivers DC coupled shot gunning is best. 73 Zeno  LFOD !
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Hybrid Mode
