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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc. |
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21st Jun 2020, 11:10 am | #41 | |
Dekatron
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Re: Sony TC 800A portable R2R belts
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It would be very interesting to see a photo showing your mains transformer primary taps wiring. David |
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21st Jun 2020, 11:32 am | #42 | |
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Re: Sony TC 800A portable R2R belts
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21st Jun 2020, 11:35 am | #43 |
Pentode
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Re: Sony TC 800A portable R2R belts
Hi everyone and thanks for you patience in this matter, here is a better photo if its of any more help, also there is not a switch to switch over voltages in the unit.
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21st Jun 2020, 12:09 pm | #44 |
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Re: Sony TC 800A portable R2R belts
Hello Trevor,
That helps a lot but is still a little confusing, compared to the schematic it does not appear to match any of the 4 voltage options 100% ? If the red wire was not there then I would have said yes it is 240 volt wired. It probably is wired for 240 but the presence of the red wire confuses the situation. I assume from the photo that the white wire loop at top corner is just a wire link (effectively unused) both ends connecting to the top right tap (120V) is this correct ? Personally before I would be happy to say yes 240 volts wired confirmed/OK to switch on, I would like to know where the wires leaving the transformer primary connect to, namely the 2 white wires, the red wire and the orange wire. 2 of the wires will go back to the mains connector AC pins (identified on the schematic as A & B), probably direct but one connection also connects to the resistor for the neon lamp. I would guess these will be the white wires but could be wrong. One connection (I would say most likely the orange wire) should connect to the neon lamp. This leaves the red wire which currently to me is a mystery, because from the photo it connects to the white wire link that connects the top 120V tap to the bottom left hand tap (0V), this type of connection is not shown on the schematic for any voltage setting ? David |
21st Jun 2020, 12:10 pm | #45 |
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Re: Sony TC 800A portable R2R belts
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21st Jun 2020, 12:16 pm | #46 |
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Re: Sony TC 800A portable R2R belts
Yes that agrees with the schematic 4 voltage options, namely 110, 120, 220 & 240.
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21st Jun 2020, 12:33 pm | #47 | |
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Re: Sony TC 800A portable R2R belts
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21st Jun 2020, 12:44 pm | #48 |
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Re: Sony TC 800A portable R2R belts
Are you sure about the battery level meter, have not seen this on the schematic and would not think the transformer would connect to it ?
I do not recognize what the red and white wires in your photo are connecting to, can you elaborate please, are they battery compartment terminal wires ? once again if battery connections then makes no sense that the red wire would connect to ? |
21st Jun 2020, 12:57 pm | #49 |
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Re: Sony TC 800A portable R2R belts
The battery level is only displayed when switched to playback, I would think the level meter would contain the neon, maybe both the red and orange wires go to the neon in the meter? They are connected to a 110 volts supply.
Lawrence. Last edited by ms660; 21st Jun 2020 at 1:19 pm. Reason: addition |
21st Jun 2020, 1:46 pm | #50 |
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Re: Sony TC 800A portable R2R belts
Ok guys, i think the time has come to draw a line under the voltage issue, its taking up far too much of everyone's valuable time.
In the absence of a fully UK only service manual and the fact that absolutely no where externally on the tape deck does it mention voltages then i think its best to keep it and use it on 12volt only. I want to say a huge thank you to all of you for allowing me some of your personal time and on Father's Day too. Once agsin 'Thank You ' enjoy the rest of your day guys. Trevor |
21st Jun 2020, 1:53 pm | #51 |
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Re: Sony TC 800A portable R2R belts
Fairly certain its configured for 240 volts operation, two 0-120v primary windings connected in series, the neon being connected across a 0v and 110v tap (as would be expected) on the transformer by the orange and red wires.
Lawrence. Last edited by ms660; 21st Jun 2020 at 2:05 pm. Reason: addition |
21st Jun 2020, 2:20 pm | #52 | |
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Re: Sony TC 800A portable R2R belts
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All the best bud and thanks once again to everyone who has played a part in this Sony TC800 A adventure. Trevor |
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21st Jun 2020, 2:25 pm | #53 |
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Re: Sony TC 800A portable R2R belts
As an aside, you don't need a schematic to check for 240 volts operation, if the two 0-120v windings are connected in series and then are connected across the mains input then it will be configured for 240 volts operation.
Good luck with it whicheverways. Lawrence. |
21st Jun 2020, 2:41 pm | #54 | |
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Re: Sony TC 800A portable R2R belts
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Have a great day. |
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21st Jun 2020, 4:48 pm | #55 | |
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Re: Sony TC 800A portable R2R belts
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21st Jun 2020, 5:09 pm | #56 |
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Re: Sony TC 800A portable R2R belts
Yes can now see the meter and that the battery strength is only monitored in Playback mode. I did wonder where physically the neon might be, it seems plausible that it might well be integrated into the meter assembly.
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21st Jun 2020, 5:14 pm | #57 |
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Re: Sony TC 800A portable R2R belts
Yes agree (assuming that the red and orange wires do go to the neon/resistor assembly).
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22nd Jun 2020, 10:35 am | #58 | |
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Re: Sony TC 800A portable R2R belts
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Thanks Trevor |
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22nd Jun 2020, 10:39 am | #59 |
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Re: Sony TC 800A portable R2R belts
The 800 model not the A or B variants state 230 volt only on the information plate, the model known as the Sony 105 which is similar but little larger states on the information plate 110, 117, 120, 230 and 240 volts so i would assume it accepts all voltages, but still mine states nothing at all.
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