I think I have the same exact problem on 2 portables. If anyone has found a solution I would be interested in learning what is wrong with it. Thanks!!!
I am having the same exact issues with my apple 3 almost to the T. If you have solved this issue please let me know what you tried. I noticed my power supply is making some weird noises so I think the first step for me is to get that stabilized.
I will look into getting the capacitors replaced...
Thanks for your help and support! I owe you big time for all the things you have done for me :)
You dont know how much I appreciate all of this!
Have a great holiday!
Omg it worked!!!! I replaced the chip with one from a dead board And as soon as I flipped the power switch the chime was normal and it came up with the flashing disk!!! I'm so happy this actually worked!!!
I put a socket in and cut another socket to add 4 more pins and the replacement chip from...
Wait I just noticed chip 1e has vsync and hsync I'm going to assume that's vertical and horizontal sync for the screen.
It's labeled LAG I gu I'll try swapping that chip.
Lol I still have no clue what chip that would be. Any idea on the name that it would be?
I haven't looked yet maybe it's labeked mux I'll go see.
Oh, I almost forgot merry Christmas everyone to all who celebrate it!
Thanks everyone!
That's more of what I was thinking. I thought it would be some chip but I had no clue what it would be.
I'll try and replace that and see if it helps
Hopefully it's 16 pin or less so I can throw in a socket.
Alright I'll try replacing it and see if it helps.
The thing is it was working fine before I did that so that's why I think a cap wouldn't go bad because of a spark. I'll try it anyway and see if it helps.
I tried another motherboard in it and it works fine so it's not the analog.
Thanks for...
I did something stupid :(
You know the type of fly back transformers that don't have the bleeder resistor? That caused a big problem for a motherboard that was working fine.
I unscrewed the groud wire from the crt and discharged the crt with it. There was a big arc and it was safe to remove...
Thanks for the link that exains a lot!!!
It appears I also have the f at the end of the serial
I think I put 2 and 2 together and possibly figured this out. These came in a box labeled Bill Fernandez. If you don't kn who he is a quick Google sear will explain who he is. I believe these were...
Today I recieved a motherboard that has some very interesting characteristics. Something I have never seen before leading me to believe it's a late prototype. As you can see form the pictures it has yellow paint instead of the normal white paint marking what chips go where and what component is...