After some more testing I found that the power might be good  I did replace 6 caps all were the same kind.  Now I have to figure out what is wrong.  when I turn on my lisa the light now comes on everytime, never happened before.  but no beep or picture.  I have tried two different cpu boards and two different mem boards.  No picture on the external connected monitor.  Earlier tonight I did see a white flash or two on the monitor so I think that the tube on the monitor is still good.  Could the video card ( the one behind the picture tube) need fixed?  any sugestions?  On a side note someone I have been in contact with might have a lisa still in a box hardly used if at all.  don't know what model or anything but might be getting it :)  if they are not trying to pull my leg :)

Patrick
  
On Mar 21, 2007, at 9:56 AM, tommoni wrote:

Hi Patrick,

very very very likely that one of the secondary diodes has a shortcut. So before you solder out all the caps, first try to make some measurements instead of a try-and-error-repair :-)
There's only one big dual-diode (looks like a transistor in the metal-housing) which is probably the bad one if you describe that clicking-sound. It's overcurrent shut-down, because that diode has a shortcut. Try to measure with an ohm-meter one of both contacs at the soldering side with the housing of that diode. There must be one good and one with less than 0,5 ohm. Else try all the diodes vertically mounted, they could be bad too

greetings TOM from Bavaria, the center of europe, the marvellous
castles of Koenig Ludwig e.g. Neuschwanstein and last but not least
the original Oktoberfest !


Am 21.03.2007 um 11:13 schrieb Patrick Garber:

Could the "solid state relay" be bad?  Because I hear  
clicking when I hold the power button in.  I read this http:// 
lisafaq.sunder.net/lisafaq-hw-pwr_Lisa_does_not_power_on.html

Thank you
Patrick






--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "LisaList" group.
To post to this group, send email to lisalist@googlegroups.com
To unsubscribe from this group, send email to lisalist-unsubscribe@googlegroups.com
For more options, visit this group at http://groups.google.com/group/lisalist?hl=en
-~----------~----~----~----~------~----~------~--~---