>Well, I tested the 128k's T1 Flyback transformer in another Mac and worked >perfectly. SO that's good. But installed in the 128k it does not seem to get >power at all. That leads me to suspect the next prior component in the >circuit, the Q3 (or HOT). I tested a known good Q3 transistor in the 128k >and still no power to the T1 flyback. Using Prof. Lee's schematic, tracing >the circuit backward I see the next component is T2. Is it possible this >isolation transformer failed somehow with no visible signs? Feeding the T2
Using a multimeter, you could try some simple resitance comparisons between your faulty board and your other working board, if you are feeling braver you could try to measure voltages while the unit is on and compare with the working unit, or why not carry on the tack of swapping components, fixing things is always a lot easier when you have a working model to compare with! good luck! Regards Sean. -- Classic Computing Pages: http://www.megadon.co.uk/syrinx/ -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---------------------------------------------------------------
