I can see 4 diodes that look like transistors,  CR2,CR8,CR10,CR1.  CR11 is the biggest one next to the big transformer.  I don't know exactly how to test but I tried and all of these 4 seemed to get a reading but the one next to the relay switch CR2?  I could not get anything to come on the screen.  I guess I will see if there is one of then on something else I have.

Thank you again for your help,
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






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