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Yeasu 1200 don't turn on.power supply is okay just radio doesn't power at all.prier to this the audio went crazy loud.?

Posted by Mike Morrison on

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SOURCE: yeasu ft840 turns on display

panoptic.com/rking/ham/FT840-Service_Manual.pdf
service and repair manual at above link.
If there is NO audio and no xmitt, then it is most likely something common to both circuits? Anyway it's not really possible to diagnose a fault, via a forum, unless clear cut, which this is not, your best course of action is to work through the troubleshooting steps and see if you can isolate your issue.
If DIY isn't able to be done, then the best bet is to contact a Yeasu local or head office, or over the 'net, and ask for a referral to an authorised serve center, here ask for a "Quote" as to costings and type of repair, this way then at least you can make an informed decision,as to what to do.

Posted on Apr 04, 2011

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johnjnail

john nail

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SOURCE: No dash lights, power locks don't work, fuel

all these circuits share some common fuses, check fuse #6 ( 10 amp ), fuse # 11 ( 15 amp ) & fuse #12 ( 10 amp ) all in the inside fuse box at the left end of the dash.....good luck

Posted on Jun 20, 2011

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