Good day folks, I’ve got a Dynacord S65 that won’t fire up, so I opened it up and found that the voltage selector had been removed and replaced with a fuse, double ‘brown wires’ were connected from the transformer and the other 3 pairs were taped up and not connected. So my question is I don’t know which leads are for what voltages and don’t want to mess things up using the wrong voltage tap. My schematic doesn’t help with the color code. I’ve attached a couple of pics to show the wires. If I can establish the correct ac requirement then it it might fire up, and or give me a starting point to probe. Also i wouldn’t mind maybe even finding an original or similar correct voltage selector. The unit is nice and clean with no signs of leaky caps or any other attempts to repair. Looking forward for somebody to shine a light on this, thanks,,,Rick
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Get a 6.3V AC CT transformer, a couple Amps. Connect one end and the CT to give 3.2V AC. Connect that to the heater line. This will power-up at half voltage. If the wall-plug shows 60V AC coming OUT, the transformer is "probably" wired correctly for Can/US 120V power; if it shows 120V then it is likely wired for 240V power.
Or bring it up, slowly, on a Variac until you have 6+V on the heater lines.
(I assume 6V heaters. If this did something else, figure accordingly.)
Or bring it up, slowly, on a Variac until you have 6+V on the heater lines.
(I assume 6V heaters. If this did something else, figure accordingly.)
Dynacord S65
Well,, I was kind of wanting to know the voltage of the different taps because they are color coded as shown in the pics and if somebody has a Dynacord S65 I'm sure the color of the taps (should be the same color) could be identified on the voltage selector and that would guide me to installing another selector correctly. Also I'm not an electrical guru and would find it difficult to execute your instructions, which are appreciated for sure. Thanks.
Well,, I was kind of wanting to know the voltage of the different taps because they are color coded as shown in the pics and if somebody has a Dynacord S65 I'm sure the color of the taps (should be the same color) could be identified on the voltage selector and that would guide me to installing another selector correctly. Also I'm not an electrical guru and would find it difficult to execute your instructions, which are appreciated for sure. Thanks.
PRR's idea with the variac is the simplest and safest way to go. My bet is that it's wired for 120V unless you know or strongly suspect it came from Europe used.
I had one of these back in the '60's and used it for vocals in the bands I played in. Back then these were too expensive to use on guitar. If you live in the Montreal area that could once have been mine.
It's a real trip down memory lane to see your pics. Thank you for posting.
(Maintenance tip: don't let anyone put their drink down on it.)
I had one of these back in the '60's and used it for vocals in the bands I played in. Back then these were too expensive to use on guitar. If you live in the Montreal area that could once have been mine.
It's a real trip down memory lane to see your pics. Thank you for posting.
(Maintenance tip: don't let anyone put their drink down on it.)
About ten seconds of googling led me to this page: Dynacord Echocord Super 65
Do you need even more information?
The schematics (http://www.peel.dk/Dynacord/pdf/Echocord Super 65 (275-100).pdf) shows that the power transformer's 240Vac primary winding has taps at 220Vac, 130Vac, and 110Vac, respectively. The original fuseholder was a combined fuseholder/voltage selector with the fuse in the central, or wiper, contact and a 4 pos. rotary switch. Unfontunately the colour codes are not depicted. But I'm quite sure that you're able to decipher them by your ohmmeter.
Best regards!
Do you need even more information?
The schematics (http://www.peel.dk/Dynacord/pdf/Echocord Super 65 (275-100).pdf) shows that the power transformer's 240Vac primary winding has taps at 220Vac, 130Vac, and 110Vac, respectively. The original fuseholder was a combined fuseholder/voltage selector with the fuse in the central, or wiper, contact and a 4 pos. rotary switch. Unfontunately the colour codes are not depicted. But I'm quite sure that you're able to decipher them by your ohmmeter.
Best regards!
thanks kay, been to the site and have the schematic, I've given up on this project and put it back in the closet, thank you all for your participation.
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