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Thank you guys for your answers. Try to reply. 1. I didn't try open firmware reset yet. Will do it tomorrow 2. There are no capacitors on G3 B&W "Yosemite" mobo. At all. At least I didn't see anything that may look alike. 3. Sure I tried every RAM on its own and even got new bank of 256 mb RAM...

Hello everybody! I have unexpectedly faced with the problem with my old Power Macintosh B&W. I bought this machine in 1999 and upgraded it much: up to 1 Gb memory, Sonnet 800 Mhz G4 ZIF processor upgrade card, ATI Radeon 7000 PC flashed video card, DVD-RW super-drive and Sonnet PCI IDE...

Hello! Unfortunately it didn't work. Nothing changed even when I left only one pair of memory modules and the drive.

The seller changed the PRAM battery. So it is brand new, fresh, 2024-made. But I catch the idea and will try it today, thank you!

Hello! I have no original SCSI HD drive, only bluescsi v2. It does boot with it and without ATA card. But I can't install OS neither from one image on SD card to another, nor from real bootable CD to image, nor from image to SSD.

Thank you again, though it’s really the worst diagnosis I expected… There is one more issue to take into account: the mac never starts/boots immediately when I power it on: chime sounds, but nothing happens. I have to reboot it manually (by pressing power button on the case and then again on...

Thank you for answer! Excuse me my ignorance, how should I check up capacitors? Really don't know much about it. Didn't see any bulging capacitors though, that might be discovered obviously. And what PS stands for?

Hello, everybody! I need some help! Two months ago I bought old Power Macintosh 7500 in rather good condition: no cracks, looks rather good. The seller assured me that it works fine. Instead of SCSI drive he installed Sonnet ATA 66 controller card with SSD ATA drive and ATAPI DVD-RW drive. 200...