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Thread: Boss RC30 schematic

  1. #1
    Member Nyqusit5's Avatar
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    Boss RC30 schematic

    Hi all,

    I am working on a Boss RC-30 looper. It puts out no signal through the two output jacks but input signal and loop signal is present at a mixiing op-amp. I have repaired an RC50 with a similar problem and I know these units have muting circuits on the outputs. The problem is that I have no schematic for this one and it is different from the RC20, 20XL or 50. Tracing it is simply not realistic given that it is all SMD's.

    Does anyone have it?

    Thanks in advance.

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    Member Nyqusit5's Avatar
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    Still looking for the Boss RC-30 schematic...! Anyone can help?

    Happy New Year 2017 to everyone!

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    Member paleeman's Avatar
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    Hi Nyqusit5

    The file is too large to upload it here. Send me your e-mail in a PM, and I will send you the manual.

    H.N.Y. to everyone.

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    Last edited by paleeman; 01-03-2017 at 10:17 PM.

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    Hey man! Can you send me the Schematics from the tc30 twin loop too? Really needed it

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    Did you manage to find it? Trying hard to find online but no results so far

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    Hi Nyqusit5,

    could you solve the problem?
    I have the same problem with the output jack.

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    Member Nyqusit5's Avatar
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    Hi,
    I can't honestly remember exactly what i had to do to repair it, but check that you have a signal coming out of IC13. If this is the case, then check the output resistors leading to the O/P jacks. They could be open. Good luck!

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    Member Nyqusit5's Avatar
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    you have mail. The file is big so let me know if it went through...

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    Twobie
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    Quote Originally Posted by paleeman View Post
    Hi Nyqusit5

    The file is too large to upload it here. Send me your e-mail in a PM, and I will send you the manual.

    H.N.Y. to everyone.

    Hi paleeman,
    I know it's an old thread..........
    I have found this thread because I am looking for a schematic for the Boss RC 30 too?
    I have the problem that the looper does not work with power supply.
    With batterie it works well.
    Can you send me the schematic please?

    Greatings from Vienna / Austria
    Gyula

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    Quote Originally Posted by paleeman View Post
    The file is too large to upload it here. Send me your e-mail in a PM, and I will send you the manual.
    How large is too large? Upload limits have been increased since this thread started, and can be increased further if needed.

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    8,4 MB

    Your file of 8.44 MB bytes exceeds the forum's limit of 7.00 MB for this filetype.

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    Last edited by Kismet; 04-16-2019 at 10:01 PM.

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    Hi vintagekiki,

    thank you for the link.....
    I have found the reason why the looper did not work with external power supply.
    The no load voltage of the external 9V / 100mA power supply is about 12,5 V.
    The unit seems to have a protective circuit so that the current suply will be interrupted if the voltage crosses a defined value.
    The power supply only breakes down to 9V if the current load becomes about 100 mA.
    But when the protective circuit first detects 12,5V it turns down the system.

    I hope you can understand my terrible english....


    Thank you once again
    Good bye
    Gyula

    ps: But if I could get the correct schematic I would be happy.....

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    Old Timer J M Fahey's Avatar
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    Quote Originally Posted by Gyula View Post
    I hope you can understand my terrible english....
    It will help if you tell us where are you from.
    Edit your user profile and add City and Country.

    Suggestions are often Country specific; a repair which is not justified in USA "because you can get another for $20 at Craigslist" or "just order parts at XXXX, free next day delivery" do NOT apply elsewhere.

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    Juan Manuel Fahey

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    Supporting Member Jazz P Bass's Avatar
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    Quote Originally Posted by Kismet View Post
    8,4 MB

    Your file of 8.44 MB bytes exceeds the forum's limit of 7.00 MB for this filetype.
    Break down the file with Cute , pdf

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  16. #16
    Senior Member vintagekiki's Avatar
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    The RC-30 uses a specified AC adapter (PSA adapter) that provides a stabilized DC voltage.
    PSA adapter should be dimensioned both for voltage and current RC-30 (see manual)
    It is not advisable to use inadequate AC adapters because they have no stabilized DC voltage and can cause malfunction.


    https://www.thomann.de/gb/boss_rc30_powerset.htm

    https://www.thomann.de/gb/boss_psa_230.htm

    http://www.fixya.com/support/t20741385-boss_psa_120_schematic

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    Hi. For some reason I cannot understand I am not able to send you pm. Could you please send me the manual to pablingarcia@hotmail.com ? Thanks in advance.

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    Quote Originally Posted by paleeman View Post
    Hi Nyqusit5

    The file is too large to upload it here. Send me your e-mail in a PM, and I will send you the manual.

    H.N.Y. to everyone.
    This one I mean

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  19. #19
    "Thermionic Apocalypse" -JT nickb's Avatar
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    Sorry I don't have the info but you have made your email address public. This will make you a target for every spammer in the world. I would say to edit your post to remove it but it's also your user name and that will require a moderator to fix, I think.

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    Experience is something you get, just after you really needed it.

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    Member patlaw's Avatar
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    To send a large file, upload it to https://wetransfer.com. After the upload is complete, the site will give you a link. Post the link here. It is valid for seven days. You can post a file as large as 2GB.

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    Site Janitor tboy's Avatar
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    The upload limit has been increased to 10MB, so it should be no problem to attach the file here.

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    -tb

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    Boss SM RC-30
    Attached Files Attached Files

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