steveporter258 | 16 Apr 2012 01:22
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Re: Better LCD + backlight replacement option.


would'nt it be easier just to put a link to the website where you got yours from instead of all the tech info
about what to look for?
It is a bit strange that you state your an electronics engineer and then state you know an electronics guy who
could wire the 20 pin connections for a little fee.
Sounds like you don't really want to help,but instead are looking to make a few quid.
--- In k5synth@..., "Matthew" <formanmatthew <at> ...> wrote:
>
> 
> 
> --- In k5synth@..., Michael Dunn <md <at> > wrote:
> >
> >     At 4:16 PM +0000 7/9/11, Matthew wrote:
> > >This group looks to be a good community and resource (Service Manual 
> > >was particularly helpful - thanks somethingkillingyou). Hope I'll be 
> > >able to put something back into it!
> > 
> >    You could do that by telling us where to get the displays. I'm not 
> > interested in a middleman...
> >
> 
> Woah! So that's what you get for trying to be helpful around here.
> 
> Not particularly interested in /being/ a middleman (or making any money, if that's what you were
wondering). Compatible displays are all over the place - just check eBay, for example. But that's exactly
the point..
> 
> In a few posts on here, people are asking 'might this display work?', 'is this one compatible?', etc. I was
just trying to offer the benefit of my experience (20 yr. professional electronics/systems R&D
engineering) to save other folks here from guesswork and offer a solution that actually worked.
(Continue reading)

jammie | 16 Apr 2012 01:29
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Re: Re: Better LCD + backlight replacement option.



 
this is the bestplace to get replacement efoils
 
they are for the k5 as its the same for the t1 /sy99/sy77/wavestation/akais3000/s3200 and many more weith the same dimentions
 
i have fitted 1 toa k5m t3ex 01w/fd and 2 s3200
----- Original Message -----
Sent: Monday, April 16, 2012 12:22 AM
Subject: [k5synth] Re: Better LCD + backlight replacement option.

 


would'nt it be easier just to put a link to the website where you got yours from instead of all the tech info about what to look for?
It is a bit strange that you state your an electronics engineer and then state you know an electronics guy who could wire the 20 pin connections for a little fee.
Sounds like you don't really want to help,but instead are looking to make a few quid.
--- In k5synth-hHKSG33TihhbjbujkaE4pw@public.gmane.org, "Matthew" <formanmatthew <at> ...> wrote:
>
>
>
> --- In k5synth-hHKSG33TihhbjbujkaE4pw@public.gmane.org, Michael Dunn <md <at> > wrote:
> >
> > At 4:16 PM +0000 7/9/11, Matthew wrote:
> > >This group looks to be a good community and resource (Service Manual
> > >was particularly helpful - thanks somethingkillingyou). Hope I'll be
> > >able to put something back into it!
> >
> > You could do that by telling us where to get the displays. I'm not
> > interested in a middleman...
> >
>
> Woah! So that's what you get for trying to be helpful around here.
>
> Not particularly interested in /being/ a middleman (or making any money, if that's what you were wondering). Compatible displays are all over the place - just check eBay, for example. But that's exactly the point..
>
> In a few posts on here, people are asking 'might this display work?', 'is this one compatible?', etc. I was just trying to offer the benefit of my experience (20 yr. professional electronics/systems R&D engineering) to save other folks here from guesswork and offer a solution that actually worked.
>
> If you want to do it yourself, go ahead.. Get hold of the manufacturer data sheet for the part you're looking at though, and do a bit of research first.
>
> Things to worry/not worry about:
>
> * LCD drive voltage (check data sheet) will generally always be within the range that the 'contrast' pot supports - the pot's just part of a potential divider that puts out a pretty wide range between about -5 and -15 V. So don't worry about that.
>
> * Provided it's a 240x64 display with a Toshiba T6963C controller and standard 2x10 pin hardware interface (compare data sheet with K5 service manual schematic), it should work fine.
>
> * For an EL backlight with similar drive needs to the original, just wire to the/an inverter; for an LED backlight as I'd recommend, first check on the data sheet that the LED string doesn't need more than about 400mA forward current (that was about the spare capacity of the 5V line on my K5m PSU, at least - best measure yours especially if a K5). Then, considering the LED forward voltage (also on data sheet), calculate a series current limiting resistor value to suit. Get a suitable resistor and wire it all up to the 5V supply line.
>
> * Some units (eg. with LED backlights) will be a bit thicker than the original - I just put some extra nuts/washers on the standoffs as spacers. There's still plenty of space in the K5m for the PSU board to be a few mm further back.
>
> As I said, if anyone wants help with any of this hardware stuff then I'd like to do what I can. Possibly less so if all that comes back is 'attitude', though.
>
> M.
>



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steveporter258 | 16 Apr 2012 01:37
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Backlight only illuminating the middle of the lcd

Hi,I have recently got hold of  K5 keyboard version and the backlight is only illuminating part of the LCD.It
is about three quarters of an inch thick and runs the length of the lcd.The outer parts of the lcd are not illuminated.
Is the backlot shot or is it the converter?I cannot hear any high pitched whine that people mention.
Some of my buttons are not working-I suspect they need cleaning.
K5=awesome synth.I love it.In this world of analogue madness the K5 is like a breath of fresh air.
Thanks,
Steve

------------------------------------

jammie | 16 Apr 2012 02:07
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Re: Backlight only illuminating the middle of the lcd



the efoil has gone with bigger efoils they tend to fade around the outside first
 
when i changed mine there was a slither of green light in the middle of the lcd and the longer i left it on it would shrink and then the coil step up transformer whould make a high pitched whine
----- Original Message -----
Sent: Monday, April 16, 2012 12:37 AM
Subject: [k5synth] Backlight only illuminating the middle of the lcd

 

Hi,I have recently got hold of K5 keyboard version and the backlight is only illuminating part of the LCD.It is about three quarters of an inch thick and runs the length of the lcd.The outer parts of the lcd are not illuminated.
Is the backlot shot or is it the converter?I cannot hear any high pitched whine that people mention.
Some of my buttons are not working-I suspect they need cleaning.
K5=awesome synth.I love it.In this world of analogue madness the K5 is like a breath of fresh air.
Thanks,
Steve



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Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
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