>From the "Full of Mac" website: (SE/30) 5. Bleeder Resister and Flyback Transformer The high voltage (1,500 Volts) on the anode of the CRT is supplied by the flyback transformer on the analog board. Do not touch the flyback transformer. Do not touch the yoke assembly, yoke cable/connector, high voltage cable and anode connector, either.
Several flyback transformers have been used for compact Macs as shown Table below. Normally, Macintosh SE/30 contains a flyback transformer with a built-in bleeder resistor, and it automatically discharges the transformer, i.e., CRT when the power is shut off. However, old and/or used SE/30s may have been modified or repaired. The flyback transformer may be replaced by an older version. Thus, for your safety, you must perform CRT discharge procedures. Manufacturer Parts Number Macintosh Model Non-Bleeder Type Flyback Transformer ZFAT AC-058 128K, Early 512K Taiwan Totoku Electric Co. 157-0026-B 128K, Early 512K Tai-Ho/Taiwan R.O.C. TH-1565 Late 512K, 512Ke, Early Plus Monitron/Taiwan R.O.C. 157-0026-B Mid Plus Bleeder Type Flyback Transformer Monitron/Taiwan R.O.C. 157-0026-C Late Plus Tai-Ho/Taiwan R.O.C. TH-1565C Mac SE Lifon/Taiwan R.O.C. 157-0042-A Mac SE, Repaired analog board, SE/30 Lifon/Taiwan R.O.C. 157-0042-B Mac SE, Repaired analog board, SE/30 Lifon/Taiwan R.O.C. 157-0042-C Mac SE, Repaired analog board, SE/30 ===== " Happiness often sneaks through a door you didn't know you left open." - John Barrymore __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com -- 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> The FAQ: <http://macfaq.org/> --> 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/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
