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<div class="moz-cite-prefix">Hello Todd<br>
<br>
Am 27.02.23 um 04:08 schrieb Todd Sines via Synth-diy:<br>
</div>
<blockquote type="cite"
cite="mid:9D0927F8-2FAF-4CF9-BDC0-267FB45FBCCA@scale.la">When I
measure the PSU board from the 220v <span style="caret-color:
rgb(0, 0, 0); color: rgb(0, 0, 0);">I get l 20v, GND, 45v, GND,
and 15v off CN1 pins 1-5. <br>
</span></blockquote>
<br>
According to
<a class="moz-txt-link-freetext" href="https://www.synthxl.com/wp-content/uploads/2020/01/Roland-CMU-800-Compu-Music-Schematic.pdf">https://www.synthxl.com/wp-content/uploads/2020/01/Roland-CMU-800-Compu-Music-Schematic.pdf</a>
on CN1 you should read <br>
Pin1<->Pin2 -15V DC<br>
Pin1<->Pin3 +15V DC<br>
Pin4<->Pin5 +5V DC<br>
(it looks like you didn't get the numbering of the pins right).<br>
<br>
<br>
Measuring the transformer should read something like<br>
Red<->Red ~9V AC<br>
Yellow<->Black ~17V AC<br>
Black<->Yellow ~17V AC<br>
This AC measurement should be done with the Transformer connected to
the regulator board.<br>
<br>
I am selling a torroid transformer with those values, similar to
this one<br>
<a class="moz-txt-link-freetext" href="https://www.florian-anwander.de/roland_jx3p/jx3p_transformer.html">https://www.florian-anwander.de/roland_jx3p/jx3p_transformer.html</a><br>
(I haven't updated the webpage with the new type yet)<br>
<br>
It can be wired for 240V and 120V.<br>
<br>
Costs are €24.80 plus shipping ~€22.00. You still have to add
customs fees and your local import VAT.<br>
<br>
<br>
Florian<br>
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