I also had the LCD on my Emax replaced with an OLED display, and the technician said he removed the inverter.
I'm not tech savvy enough to be able to support your theory, just a hint. I'd very much like to know what you'll find out. My mod was done very recently, I can't speak about it in the long term yet.
I'm not tech savvy enough to be able to support your theory, just a hint. I'd very much like to know what you'll find out. My mod was done very recently, I can't speak about it in the long term yet.
To: emax@yahoogroups.com
From: sotnickd@...
Date: Mon, 17 Feb 2014 12:39:21 -0800
Subject: Re: [emax] Diagnosing non-functional Emax
From: sotnickd@...
Date: Mon, 17 Feb 2014 12:39:21 -0800
Subject: Re: [emax] Diagnosing non-functional Emax
I will check those voltages when I get home this evening. Here's a theory:
I replaced the LCD with an OLED about 6 months ago. I never removed the inverter from the CPU board. Is there a chance that the inverter fried itself by not having a load (EL backlight) to drive?
I will try removing the inverter as it's obviously not necessary with an OLED display.
-Dave
On Mon, Feb 17, 2014 at 11:30 AM, jammie <jammie.emma@...> wrote:
check the 5v at the floppy power connectorand the invertor inputSent: Monday, February 17, 2014 4:48 PMSubject: Re: [emax] Diagnosing non-functional EmaxHi Jammie,Thanks for the suggestion, however I think the PSU is fine. I read 5.04v on yellow, 12.3v on orange and -11.89v on violet coming off the PSU harness at the CPU PCB.
-Dave
sounds like you have lost the 5v connectionthe lcd uses 5v the cf card reader uses 5v and the floppy uses 5vi would check the 5v rail on the psu----- Original Message -----From: David SotnickSent: Monday, February 17, 2014 4:25 PMSubject: [emax] Diagnosing non-functional EmaxHi all,
Now it's my turn… I'm sad to report that my beloved Emax SE Rack which I upgraded to SCSI and slim floppy is no longer booting.
Symptoms are: PSU voltages look good at the drive power connector. All LEDs on the front panel come on at power-on except load and enter. No LCD display and no floppy or CF reader activity. :-(
I have re-seated all cables but have not yet removed and re-seated any socketed ICs. It has just been sitting in a rack, so nothing has been jostled.
Any suggestions on where to start?
-Dave
p.s. even more frustrating: I missed out on a $60 working Emax SE on a local Craig's list ad which posted the day before I discovered my Emax was dead. :-(No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4335 / Virus Database: 3705/7098 - Release Date: 02/16/14No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4335 / Virus Database: 3705/7098 - Release Date: 02/16/14