Search results

:(

The drive is not detected and does not perform a head test after it was inadvertently connected to the SCSI bus while it was turned on. I assumed that the ROM was responsible for the head test, so I thought it might have been damaged. I gave the ROM to a friend who tried to copy data from it...

No one? Really? Nothing? 😩

Hi guys! I have a 20MB Rodime drive taken from my SE30. The ROM in the disk is 100% damaged. Does anyone of you have such a disk and could copy the file from the ROM and send it to me so that I can burn a new one? I would be very grateful for your help! I really like this HDD :)

Optocoupler...

Unfortunately for this situation, I replaced all capacitors at the very beginning. I understand that I should receive a reset signal from this testopiont? Currently, there is probably some incomplete 5v voltage on

Can someone help me and tell me where in A2GS ROM3 the RESET sequence is generated? My computer died today. It shows no activity inside. The oscillators are standing, the integrated circuits are cool or very slightly warm. All voltages are OK... The reset line observed on the oscilloscope during...

Hi there! I bought an Powerbook 150 in very good condition, but unfortunately PRAM battery make a little mess on the logic board, destroying the L5 choke. Does anyone know what exactly this element is responsible for? It's close to the SCSI port, which I won't use here, so maybe it's enough to...

I discovered that the transistor was good and the problem was elsewhere. I didn't take into account that high-power bipolar transistors have a built-in resistor between the emitter and the base... this misled me. However, I found the cause of the failure. (The same in both monitors. Damaged...

Next update. I found bad transistor in deflection circuit. Besides Base and emitter i have 35ohm in both monitors. After remove of course.

I have a little update. A friend of mine, who has several such monitors, gave me one today, which he bought once, but it was damaged during transport (the plastics broke). Anyway, he never turned it on and gave it to me for parts to put the one I have back on its feet. I decided to run this part...

When I said that I checked the capacitors, I meant that I checked their capacitances with an RLC meter. I have a good knowledge of electronics and have experience in working with HI POT devices. I have repaired several CRT monitors in my life, but of the old type. Setting the geometry, turning...

Hi. I have a problem with my Studio Display 21". I already received it in this condition. At first glance, you can see that there is a problem with horizontal deflection. I have experience with analog circuits, but this monitor is a highly advanced digital one. I've already looked through the...

To me, this convergence is not surprising. The problem after a longer analysis is clearly not with the graphics, but with the RAM and the circuits working with it. This IC is a part of that circuit, that's why you can see the changes.

The UE7 that is now on the logic board, has the number 341-0755-A Unfortunately, the UE6 has worn out lettering

I have replaced all the PAL chips. The result is that it only gets worse

Nothing happened.. I touch the pins, knead the logic board, press each IC, and in no way are these actions related to artifacts

Unfortunately, in my case, playing with the antenna on the Nubus connector does not work....

To the Glue chip I have not yet reached. However, as far as I can see, the problem is more with the RAM and its peripherals. The problem at first was minor. Individual pixels or lines that appeared a few minutes after booting the computer and disappeared after a few moments later. Now as I...

The artifacts are writing on the pictures. I have now replaced the PAL UH7 chip with another one and it is much worse now.