Vintage Synth Repair

Ok, a closer look at the display and the backlight is working, just 
not nearly as bright as my Korg 03R/W and Yamaha TG500. Roland told 
me the $115 LCD is now discontinued and telesisbacklighting.com says 
they can't fix those but wanted me to check to make sure I was 
driving enough current for the backlight. Looking inside the unit 
there is a 1/4watt resister (axial) right next to the header where 
the LCD ribbon cable plugs in, I'm wondering if this may be a current 
limiter for the LCD backlight? Seems logical that in a mass of SMT 
devices a single precision 1/4 watter right next to the connector... 
Does anyone have a schematic of the JV880 that might show a LCD 
backlight intensity select resistor?   

Synthflake

--- In vintagesynthrepair@yahoogroups.com, "Keith Niver" 
<kaniver@m...> wrote:
> I take it you did try to go into the menus and adjust the contrast 
or do a
> hard reset. If you aren't familiar with how to do that, go to 
Roland's web
> site and look at the support section for that unit. If it still 
doesn't
> work, try contacting telesisbacklighting.com They can either repair 
it or
> sell you another one. Hope this helps.
> 
> Keith A. Niver
> Certified MITA tech
> Niver's Service Corp
> 801 Columbia St
> Hudson, NY   12534
> 518-828-0616, Bus
> 518-755-6960, Cel
> kaniver@m...
> 
> 
> -----Original Message-----
> From: synthflake [mailto:gemjam@s...] 
> Sent: Saturday, March 19, 2005 11:46 PM
> To: vintagesynthrepair@yahoogroups.com
> Subject: [vintagesynthrepair] Roland JV880 display
> 
> 
> 
> 
> Anyone know if a Roland JV880 display can be repaired? The display 
> is good but there is no backlighting. It makes it a little hard to 
> make out. If it can't be repaired where can I find a replacement? 
> I'm in the usa, Colorado to be exact.
> 
> Thanks, Synthflake
> 
> 
> 
> 
> 
> 
>  
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