Search results

Hi, looking for any advise from a CRT guru. I have collected a nice little monitor, replaced a lot of capacitors (no obvious fault) as the monitor has a wobbly (from left to right) image (the image is also rolling up and down) I am thinking that it is an issue with vertical deflection, but no...

Never seen before, but looks like you are having a foldover on the right edge ( round corners are missing)

I agree a 100% with all above, by far the Classic is the more unreliable unit ever built, it was a cheap put together item at the time, and still is today. It was a Macintosh Plus in new clothes, but with prone to failure new capacitors, in the Logic Board and Analog side. Start with new...

IIRC, the Pismo will need a pram battery to work properly ( but I don’t have a Pismo myself) the Wallstreet is playing ok without, but will have issues with backlight or contrast, the bronze don’t need a battery either (I have both and the batteries have been dead for a while now)

Not in the Imac G3, but at some point tried a couple of alternative cards, including the Orinoco Silver and the Cisco Aironet. Both worked without any issue in PowerBooks, some directly detected as original Airport cards, some only when a third party program was present.

No heatsink required ?

I agree, probably too many bad chips to generate a correct fault code. You can try the piggybackîng method to narrow down the issue.

The first LC model was available with two floppy drives and can be sold without hard drive. https://en.m.wikipedia.org/wiki/Macintosh_LC

Hi, yes you can add multiple HDs, using the rear scsi connector. One of the drives can be a Prodos formated drive. At some point, I used DSK2File to write 5,25 floppy disks. https://dwheeler.com/6502/oneelkruns/dsk2file.html Will write an image file to 5,25 floppy. Never done to a 3,5 one...

Have a look at my own post for the Apple II monitor repair, probably related (the monitor is using the same TDA1170) Here enclosed the SAMS manual, maybe the Lisa is close enough…

Hi Janez, I will say 4/5

Last week, I collected an Apple Il monitor for a fair price (was advised for parts or repair and untested, but in good condition) After cleaning the casing (which was great) I tested it only to discover that it was suffering from a complete vertical collapse. remember the untested notification...

I agree with Tobias, in my opinion, a lot of work should have been done on this board already, so reverting back to 512k will be a pain by itself. Maybe finding a 128k board is the best option. Have you got the 400k drive or the new 800k ?

Probably related to the yoke part of the Analog Board, and more commonly the vertical sweep generator (fig 3) https://vintageapple.org/gamba2/images/plus_analog.PDF Q1 or Q2 maybe.

Sounds like the worm screw is not driving properly the head. The shaft on the side of the head can be stuck too.

Hi, yes probably a 128k with new ram chips (Poorly done unfortunately) and Plus Roms. You should have the rear Macintosh badge or the late Macintosh 128k one.

HI, low voltages or High voltages can be a sign of a bad optoisolator, so i will replace it first with the two diodes that are in the neighborhood DP3 and DP4 (1N4148) Don't have the reference right now but probably CNY17G Keep in mind that the 12 volts line is important but the 5 volts is the...

This board seems to have a battery bomb issue in the first place, not impossible to fix but be prepared to a lot of work.

The capacitor is a 105 unit so a 0.1 µf and probabaly broken (not intentionaly) better replaced it, not hard at all. Concerning the AB board,, have seen worse (and was working fine) and far better (and not working at all) i will clean the tarnished areas with white vinegar, and touch up the...

https://68kmla.org/bb/index.php?threads/classic-ii-no-sound%E2%80%A6-solved.40921/