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Home Forums 68kMLA Mac Classic 2 Problem Diagnosis. — #1
Post #1 by Mars478
Source Forum68kMLA
CategoryTroubleshooting
Post DateWed, 17 Jun 2009 - 13:39
Original URLhttps://68kmla.org/bb/threads/mac-classic-2-problem-diagnosis.17688/
Post
Hey everyone!

I Bought a Macintosh Classic 2 off of Ebay for 10 $ (Plus 22 Shipping :p ) . It comes with a keyboard and a Mouse. The Description says that it starts up to a Flat line on the CRT and that the Vertical Sweep circuit is blown out. According to this site: http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html

They Say

"(1) The first thing to do is to check the P1 connector. If the problem is caused by connection/soldering failure of the P1 connector, you will see the burnt and/or charred P1 connector. Desolder, clean and resolder the P1 connector.

(2) If the problem still persists and the culprit is the U2 IC chip, replace it with a new TDA1170N chip.

When the U2 IC chip is broken, you may see another symptoms such as:

(1) The screen is shrunken to the upper/lower half of the monitor and the opposite half blacks out,

(2) The upper/lower half of the screen is extended in the vertical direction."

Does anyone know of this Problem on a Classic 2? The site above was made to repair the Macintosh SE and not any other...

Thanks!

mp.ls