Re: Quick diagnostic question

the connector on the k5 is backwards what should be pin 1 is not as the idc socket has the notch on the wrong way round

so if changing m,ake sure your checking the connections correctly

i buy my backlight from japan £5 + £2 postage 

from an ebay seller ill get the link for you

the reason why your not getting whine with your dead backlight is that its still providing enough resistance so the invertor does not whie

so you have to be careful when transplanting a new display thay you connect correctly

the newhaven led backlight lcd displays that fit the sy99/t1/wavestation/k2000 will fit
  ----- Original Message ----- 
  From: Daniel Forró 
  To: [email protected] 
  Sent: Saturday, February 08, 2014 4:31 AM
  Subject: Re: [k5synth] Quick diagnostic question


    
  Yes, it looks inverter is OK. So maybe just connection between EL foil 
  in display or EL foil is bad. Measure tis high voltage directly on 
  display contacts.

  If there's a voltage, then you have to change EL foil for the new one. 
  Ask here:

  http://www.backlight4you.com/

  I have very good experience with their products and service.

  It seems that display is of standard type and could be replaced by 
  modern one with LED backlight if there's enough space inside the 
  machine. It needs some modification of circuit, soldering the 
  connector, and removing inverter.

  Daniel Forro

  On 8 Feb, 2014, at 12:38 PM, <[email protected]> <[email protected] 
  > wrote:

  >
  > I decided to do something about the dead backlight in my K5, but 
  > wanted to make sure the inverter wasn't dead also. I never heard 
  > any high pitched whine from the inverter, but decided to see if 
  > there was any AC curent flowing. I unplugged the green and violet 
  > leads from the board and when I turned it on, I immediately heard 
  > the very high pitched whistle coming fro the inverter. When I 
  > touched the probes from my multimeter to the pins, I got a reading 
  > in excess of 100 volts (hard to read the scale accurately due to 
  > fluctuation caused by my shakiness touching the pins). From this, I 
  > can presume that the inverter is still fuctioning? When I plug the 
  > dead backlight back in, the whistle isn't there.



  
  No virus found in this message.
  Checked by AVG - www.avg.com
  Version: 2014.0.4259 / Virus Database: 3697/7075 - Release Date: 02/08/14