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its probably vinegar syndrome just starting.

short means .000 or close to it. That seems normal to me. You should start checking all components instead of throwing parts at it. Such as, check the main regulator for shorts. check the switching transistors for shorts, etc... Sounds like the power supply grenaded itself and thats that.

Its possible the engineer for the international version ran into a parts availability problem, so he came up with a rather unconventional method of doing the task. And yeah you are correct about building the voltage drop at a certain point for the transistor to conduct, thus clamping the...

its acting like a memory out of bounds condition. like a pointer that got sent off into the weeds which just starts filling up memory with w/e, eventually hitting screen memory. So yeah, its not executing or reading the code properly.

Yeah everything here is chain which is JS heavy.

Did you spray and clean out the brightness potentiometer? Its also entirely possible the CRT is starting to develop an issue in the electron gun. Check that too.

Now, how in the world did you manage to order a PIzza on that thing? I didnt think they could render the modern web to do such tasks.

I just rebuilt 2 or 3 of these drives and I believe i did a youtube video on them. But they were simply recaps. I haven't ran into these failures yet.

I know Norton Utilities does, it complains about bad dates and fixes them.

Just make sure all the lines to the SWIM, and i mean ALL of them tone back to the GLU, CPU/ROM areas. If that looks ok, then replace the SWIM.

I was going to ask, i dont see where you specify the actual problem unless i overlooked it. Then i followed further in the thread and i wanna make sure i actually got this right: you get a chime with a raster. What raster do you get? got a pic? what chime? Death chimes or good chimes? or good...

Portable uses a documented standard. Otherwise, youd have to pull a datasheet of the panel you are replacing and follow those specs. if neither are operable, Logic Analyzer time...

I think it would be neat to do an FPGA project to convert LCD signaling standards from the older parallel stuff like in Powerbooks, and especially the Macintosh Portable, to put out the correct timing signals to more modern LCDs that could be used as retrofits into the old stuff...

you have a bad connection somewhere in there.  the thing with power supplies, they either work, or they dont.  The only time things become intermittent is either with bad connections, or bad capacitors. (which you have already changed).  If the protection circuitry drifts a bit, it could...

The hybrid is bad. It is very common. If the Hybrid isnt stable, no way in hell the PMGR will be. When the charge state switches, the PMGR internally changes the ADC scale and other operations.  only solution is to find a new one from a donar board.  I am in the process of potentially...

Its possible. but the problem is you dont have a direction signal, or step signal. so the head would just slam around. 

I am starting this thread because we are at the point where this needs done.  I also want a record for links to other peoples projects on that so they don't get lost. I know there is one floating out there, but alas... I forgot to save the link to it.  Anyways... I have a prototype M5120 and...

Yea, I can see the hole blown in it.  Thats weird how that happened. :-/

What is a PPI Phier? 

95 Microhenry.  It is also very unlikely it is bad, unless the legs are broken clean off and you have nothing to solder to.