Here’s the little Game Gear prior to repair. As you can see from the above it has very quiet sound and no … Continue reading
Category: Repairs
Amstrad Sega Mega Plus PC 486SLC
Great news, the co-processor for the 486SLC CPU has arrived and is recognised perfectly. It is an ULSI Advanced Math Coprocessor SX/SLC rated at 33MHz. Code US83S87. Also detected as an ULSI ULSI 84×87
I’ve been able to run MEMTEST … Continue reading
Amstrad Sega Mega Plus PC Upgrade
The new motherboard went in and POST passed OK, hard drives were recognised perfectly. Sadly this indicates that the 386 board that was originally in the machine has an issue with the hard drive controller on the motherboard. It will … Continue reading
Sega Saturn Model 1 Power Supply Issues
Here’s how to replicate the fault:
– Run the Saturn for an hour or more so it becomes nice and toasty. … Continue reading
Amstrad Sega Mega PC Disassembled
An Amstrad Mega PC overview. A Sega Mega Drive ISA card is installed. Arrived in not-so-good condition with corrosion from the NiCad battery.… Continue reading
Co-Processors and You
Or more specifically co-processors for the Amstrad Mega PC or Amstrad Mega Plus PC.
387SX co-processors pair up with either the 386SX or the 486SLC. You cannot install a DX type co-processor with an SX chip. I ended up with … Continue reading
Amstrad Sega Mega PC Upgrades
Browsing the internet I came across an Amstrad PC7486SLC motherboard. I couldn’t help but notice the striking similarity with the Amstrad Mega PC motherboard. And with all my issues with hard drive controllers on the Mega PC, I figured it … Continue reading
Amstrad Sega Mega PC Repair
Such a wonderful shade of blue. Unfortunate that it has eaten the tracks on the motherboard. That’s the power of NiCad battery acid though.
Cleaned it up as best as it could be cleaned with some isopropyl alcohol then mapped … Continue reading
Amstrad Sega Mega PC 386SX Arrival
It has arrived. My Amstrad Mega PC. A 386SX combined with a Sega Mega Drive. Amazing!
Sadly after having a look inside it, I discovered the date / time backup battery has leaked delicious NiCad goodness all over the motherboard.… Continue reading
Fuse Replacement on the Sega Mega-CD 1
Ohhhoooo so very shiny! I discovered one of my Sega Mega-CDs has a blown fuse that was replaced with a big blob of solder. Probably works fine, but I want the little guy to be protected from power surges. … Continue reading
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