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Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

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RE: [vintagesynthrepair] Re: JV1080 repair.

2012-12-31 by John Rose

Just gone through the test and some of the questions are a bit confusing, however got through and just waiting for the registration email, however I did download a copy of the 1080 SM first as I am waiting to get hold of a JV1080 already got a couple of JV880\u2019s.

One idea that comes to mind is have you tried the ROM Play mode as I understand that this generates an internal MIDI sequence to show what the instrument is capable of (but is also used to test some of the internal voices) could also be why it is the starting point to enter test mode, just a thought.

Although it is not directly relevant but may be helpful to some members, on one of the JV880\u2019s most of the switches on the front panel did not work (a bit limiting) on looking at the schematics it showed that the connections went from the front panel PCB to the main board, but on removing the PCB it showed very fine cracks (needed a magnifier to see them) in the PCB radiating away from the hole the rotary encoder was mounted through, these cracks had damaged quite a few tracks on the PCB and using fine wire to bypass the suspect tracks brought the unit back to full functionality.

Many thanks

John Rose

(www.astrodevelopments.com)

From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Daniel Forró
Sent: 31 December 2012 00:11
To: vintagesynthrepair@yahoogroups.com
Subject: Re: [vintagesynthrepair] Re: JV1080 repair.

There is really sometimes problem with downloading, and I couldn't
pass their test more times despite I'm quite sure my answers were OK...

Daniel Forro

On 31 Dec, 2012, at 7:46 AM, KurtF wrote:

> Yes, so I noticed after noodling around the back pages trying to
> find an email address (and not finding one) to complain to after a
> download failed and it wouldn't let me start again due to their two
> download a day limit, and after missing one of the 'test' questions
> for membership which also cannot be tried again for a few days, I
> just threw my hands up in disgust and didn't really care that I had
> misidentified them. I really just plain didn't care. And I still
> don't.

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