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This text is copied from "Apple Guide Family": So, the RTC is a custom chip and propably it can't buy as part, but only with all SE board. And I don't think there is another chip that can replace a original chip and working fine.

No no. This leg is broken in chip. Is no cut, but is ripped from chip.

The PRAM is in RTC chip. I have a Apple Guide Family and i know - the PRAM is there. I resolder all caps on board and replace it. The chip is phisicaly broken (one pin is break off).

If you have that chip is very helpful for me. So this chip is markered on board as "RTC" and it's a model 8833MPG and apple part 343-0042-B (maybe you have a another version, but it's nevermind).

Yes but nothing happen. Today i found a broken pin on rtc chip. So propably this is my problem. I can replace this chip but i can't find any information or pages of this RTC chip. Maybe i can buy broken board from other mac but all boards on ebay is working and its very much $ for me. If someone...

The battery is new. I replaced it few weeks ago (and it has a 3.54V now). My problem is in my country. I living in poland and here is very hard to find any part of apple. Of course I can buy other Mac SE but this is not what im find.

OK. I found it. The PRAM is in RTC chip on board. But I can't find those chip 8833MPG, apple part 343-0042-B.

Hi. A few months ago I repaired Mac Classic. Today I have a SE model. Now I have a problem with PRAM. I installed a new Lithium battery, but mac still can't save parameters to PRAM (eg. speed of mouse). Where is PRAM chip? Or what's going wrong?

thanks. now i can repair my mac!

All caps are replaced. This two diodes has fail but i can't read any text on those because it is unreadable.

What is number or name of this diodes? This is mac classic analog board.

Ok. I adjusted voltage on 12V adjust resistor then problem with unstable screen is gone. Great! I think all is done. Now i have 12.04V and 5.06V on disk. But 20min after that classic is freeze and the fuse on analog board is blowup. Something goes wrong?

How can i do with this screen?

Now I replaced all caps on analog board. Voltage on disk connector is 4.85V and 11.51V (i think, this is quite bit low. On my mac pro is 12.04V and 4.95V), but mac is working fine (no errors or hangings). Now screen is unstable only.

I've replaced it, but noting happen. Screen is still unstable on up corners. But hard disk is working fine for 15 minutes after system boot.

All caps on logic board (not analog) i have replaced. And i replace 8 caps on analog board (i used instructions from uniserver's link. I tested voltages and if computer is idle, the disk have 11.59 and 4.86 volts. But if using (eg load os) then voltage is unstable

OK, I replace all caps (i look your link), but it not resolve the problem. Screen is still unstable.

Hi, i have a old Classic. But the problem is in low voltage. In most of time it working fine, but sometimes the hard disk is slowing or is totally stops (commonly if heads is running) and screen is a little bit unstable on up corner. Then mac is freeze. I have a 220V version (no jumper JP1).