K5synth

i am no specialist - here is what i found at kfuenf:
==================
If you're LCD backlight is not working, the first thing you
should try is heating up the joints and applying a bit more
solder (a lot of the inverters suffer from cold solder joints,
I guess).  If that doesn't work, you need to replace it or
live with it (which I've done for a few years - it's not that
bad).  You may want to look for an alternate source for the
inverter, as Kawai now charges $45 a piece!  When you open
your unit you will be able to see the inverter.  It's a white
rectangle mounted on the backside of the LCD assembly, mine
is labelled "N103-05-5 Nichia 14S7ZT".  Remove the board it
is mounted on, turn it over and you will see the three solder
joints.  You'll need quite a bit of heat, but be careful 'cause
it's sensitive/expensive.  After replacement, my K5m blew the
1A 250V fuse on the LCD assembly a few times.  It's fine now,
but makes the typical K5 LCD buzz.  Anyone know how to get rid
of that?
=================

all i did was heating up the joints and applying a bit more
solder. (Just like i know it. dunno anything about things you
mentioned.) But that doesn´t helped anyway. In fact this is was
happened next. After playing some single sounds i was going intoo
multimode and the k5 crashed again, BUT suddenly the light was there
again! I turned power off and shortly after that the light was gone.
Tzzz.. ?!?! dunno...

For the pictures look at the PHOTOS section under K5M inside.

Is there someone else interested in burning an Eeprom here in Germany?
I found a guy that could do that maybe..



--- In k5synth@yahoogroups.com, Antoine Deschênes <antdes45@n...> wrote:
> i just upoaded some pictures in the files section.
> 
> Where are they?
> 
> voltage selector
> 
> ????????
> 
> Well i will try to solder that white Inverter next.
> 
> Do you mean add solder?
> 
> 
> 
> Have you already soldered?
> 
> If not here's what you'll need:
> 1. 20-30w Soldering iron(I recommend a 20w Weller)
> 2. 60/40(Sn60/Pb40) Solder with rosin flux core.
> 3. Steel wool(To clean tip)
> 
> If you want more info on soldering, go on this forum :
> http://www.instantboard.com/users/rode/  (Really suggested)
> 
> 
> sidstation@h... a écrit:
> 
> > Hi, i just upoaded some pictures in the files section. I guess someone
> > opened it before. There is this "thing" next to the battery as you can
> > see. Also one fuse is missing at the voltage selector (not on foto).
> > Well i will try to solder that white Inverter next. I guess the Eeprom
> > is that one with the silver sticker on it, right? Does anyone have any
> > further info about this thing?
> >
> > cheers
> > phono
> >
> >
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> -- 
> Thanks,
> Antoine Deschênes /aka
>   -´¯`-¸-DragonMaster-¸-´¯`-
> http://thehotcom.deep-ice.com/