Question about Panasonic RR-930 Desktop Cassette Transcriber / Recorder

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Replacement Fuse I've disassemble the unit and traced the power through the power supply unit. Everything is fine up until the fuse which does fail an ohms test on the multimeter. I found the service manual which includes the schematic, however the fuse is not shown. This can be found here: http://elektrotanya.com/panasonic_rr930.pdf/download.html The only indication is "SOC 3A" on the fuse. I understand this is 3 amps, but what about the voltage? Any help would be greatly appreciated. Thanks

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  • 231 Answers

Just replace the fuse with an identical fuse .... and try to find out why it blew in the first place.

Posted on Apr 20, 2014

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Posted on Jan 02, 2017

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SOURCE: have a panasonic RR930 microcassette

If neither rewind nor backspace work, the common problem would be that the solenoid grease has dried up and the solenoid is not retracting all the way. However, the track that the mechanism moves in also wears out, as well as the plastic rocker that depresses the rewind button where it engages the metal slide.

If backspace works but not rewind from the pedal then the problem is the pedal.

Posted on Jul 28, 2011

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SOURCE: I have 3 panasonic RR930 w/ different problems, won't erase tapes, the back space doesnt work and one will not play. where can i send them for repair

Send to Dictationmall. 866-321-9780

Posted on Aug 11, 2012

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1 Answer

Please tell me were the fuse is.


Hello,

The fuse can be located on the power supply board. To locate the power supply board, trace the microwave wire back into the microwave. The area where the microwave wire is soldered inside the TV is the power supply board. There is fuse on the board. So this means you have to disassemble the microwave....

Note that microwave store a lot of current, so unplug it and wait for about 30mins before your attempt disassembling it.

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Walesarumi

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Please tell me were the fuse is.


Hi,

The fuse can be located on the power supply board. To locate the power supply board, trace the microwave wire back into the microwave. The area where the microwave wire is soldered inside the TV is the power supply board. There is fuse on the board. So this means you have to disassemble the microwave....

Note that microwave store a lot of current, so unplug it and wait for about 30mins before your attempt disassembling it.

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If the unit is totally dead meaning no standbye light of or nothing on the display its dark, then you may of blown the AC line fuse. This is the first thing to check the fuse is inside the unit you can trace its location by taking off the top of the VCR and tracing the pwr cord to the point where it connects to the power supply, here is where you will find the AC line fuse use a ohm meter set on continunity to check the fuse for open condintion. If open or blown replace with same voltage and Amperage rating as indicated on the board or the fuse itself. If you find the fuse is good then you have a power supply standbye voltage missing and is related to the power supply. In which case it may be cheaper to just purchase another.

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yup most probably that is the case.

you can locate the fuse usually it is placed near the main power supply or just trace the supply cord going in your unit. but before you open your unit be sure it is unplug to avoid electric shock.

slowly disassemble the unit and be sure that you can replace all the screws back to it original positions. after locating the fuse, check if it has a continuity and be sure to replace the same fuse rating. also investigate why the fuse had blown up and look for abnormalities.

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Probably not just a fuse but it is related to the power supply, which in newer VCRs is likely a switched mode supply but linear in older ones. Either one is a fairly cheap and easy fix for a competent and honest tech.
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