We offer a complete inventory of Atari Mega / MegaSTE Computer repair / replacement parts (down to component level, Switches, I.C. Chips, ST Mouse parts, plastics....) as well as complete computers and replacement Mega Motherboards.   Not all of the hundreds of different Atari Mega / MegaSTE computer replacement parts we carry are listed here.  If you do not see the Atari Mega / MegaSTE part or items you are looking for see the Best Rev. 10 Catalog or E-Mail us at:  Sales  

Mega 2, Mega 4 / MegaSTe

Reconditioned Mega's and Mega STe's  with up to 4 Meg RAM, 40 MB Hard Disk, 720k Floppy. Features Serial/Parallel and Midi Ports.

CB102987   Atari NTSC MegaSTE Computer Reconditioned(110 - 220V Auto switching) with 1 Meg Ram (User Upgrade able to 4 Meg), Keyboard/Keyboard Cable, 720K Disk Drive, English Owners Manual, 110V Power Cord and STM1 Mouse   CALL
CB102869   NEW Atari 110V Mega 2 Computer With Upgraded MegaSTE version Keyboard with Keyboard cable, English Owners Manual, Power Cord and STM1 Mouse  $399.00
CB102869-RE   Reconditioned Mega 2 NTSC   $299.00
CB102868   New Atari 110V Mega 4 Computer With Upgraded MegaSTE Keyboard with Keyboard cable, English Owners Manual, Power Cord and STM1 Mouse $499.00
CB102868-RE   Reconditioned Mega 4 NTSC   $399.00

If you own an Atari MegaSTE or Atari portable ST Stacy, you know the Hard Drive problem you have had from the get go.  The stock Atari Hard SCSI Drive plug in Interface Card, limits you to certain hard to find Brands and Low megabyte types of SCSI 1 Hard Drives, which are getting harder and harder to find.  There have been some Hard Drive software Utility programs that helped a little, but were never at total Fix for this Problem.  Best Electronics Now has in stock a New Replacement Upgraded Plug in MegaSTE and Stacy Plug in SCSI card that will allow you to use just about any size SCSI hard drive that will fit into your Atari MegaSTE (1/2 height) or Stacy (1/3 height) computer.

Our Initial tests on this New Interface card allowed us to break the MegaSTE and Stacy typical 500 MB hard Drive limit on the Stock Atari Plug in SCSI card and finally get to the 1 Gig and Higher SCSI Hard drive ranges.  Just about all brands of the newer SCSI Hard drives worked (with a SCSI 1 to SCSI 2 or SCSI 1 to SCSI 3 cable adapters) with this New replacement Atari MegaSTE or Stacy SCSI Interface card.

Best recommends you use this New Upgraded MegaSTE / Stacy SCSI Plug in card with the HD Driver 7 Software program (our in house Bench mark Utility Hard Drive software program we use) See Best Catalog Rev. 10 Addendum page 62 for more information on this Excellent Atari Hard Drive Utility program.


MegaSTE U.S. QWERTY Keyboard With keyboard cable.  CB102099  $150.00  Special Limited Buy!  $110.00

MegaSTE Keyboard Dust Cover This Custom made MegaSTE Keyboard Dust Cover is made of a Clear Translucent light weight textured vinyl with reinforced edging. 7 inch X 19 5/8 inch X 2 - 1 3/8 inches approximately.  CB101668 $13.95

MegaSTE Clear Keyboard Protector / Overlay for your MegaSTE keyboard This clear, flexible skin covers your MegaSTE keyboard but lets you See and Type thru it. Used to protect your keyboard from dust, liquids, metals and small items that could fall into your keyboard and damage it. CB102128 $19.95


Atari Mega 2/4 Diagnostics See 520ST / 1040ST page.

Atari MegaSTE Diagnostics

 MegaSTE Atari Field Service Manual  For all world wide MegaSTE versions. Sections covered, Introduction: Overview-Main Components-Case Design - Power Supply, Theory of Operation: Overview-Main System-Audio/Video Subsystem-Input / Output Subsystems-System Startup- System Errors-Functional Block Diagram, Testing: Overview /Test Equipment-Test Configuration-Troubleshooting a dead Unit-MegaSTE Diagnostic Cartridge-Error Codes, Test Harness Hook up Diagram, Disassembly/Assembly: MegaSTE Disassembly - MegaSTE Assembly, Symptom Checklist, Diagnostic Flowchart, Parts List and Assembly Drawings, Schematics and PCB Silk-screen and Glossary. 99 pages total with 11 pages of Atari Schematics.  CB102033  $50.00

MegaSTE Diagnostic Cartridge, Rev. 1.5

20+ Diagnostic Tests. Ram, ROM, Keyboard, Color, Midi (requires loop back cable), SCC Serial Ports including LAN Port (requires optional shorting connectors), Audio, Timing, DMA Port (requires Loop back board and cable), Printer / Joy Ports (requires joy loop back + Printer cables with Loop back board) High Resolution (requires SM124 / SM125 / SM147), Short Blitter, Long Blitter, Real Time Clock, Hard Disk Read / Write Test with Park feature, Examine / Modify Memory, Set RS232 Rate, 50 / 60 Hz Video output Toggle, Internal tests burn in tests, All Tests Burn in cycle, Floppy Disk Tests including Test Disk Speed, Quick Test, Install Disk drives, Check 80 - 82 Copy Protect Tracks, Read Alignment Disk, Disk Interchange Test, Disk Exerciser Tests, SCC, VME (requires Loop back cable) also checks for current Keyboard I.C. Rev., FPU, VME Ram, TOS O.S. Version, 50 or 60 Hz operation and Total ST Memory present. Cartridge only. CB102070 $50.00

MegaSTE Diagnostic Cartridge, Rev. 1.2  18+ Diagnostic Tests. Ram, ROM / O.S., Keyboard, Color, Midi (requires loop back cable), SCC Serial Ports including LAN Port (requires optional shorting connectors), Audio, Timing, DMA Port (requires Loop back board and cable), Printer / Joy Ports (requires joy loop back + Printer cables with Loop back board) High Resolution (requires SM124 / SM125 / SM147), Short Blitter, Long Blitter, Real Time Clock, Hard Disk Read / Write Test with Park feature, Examine / Modify Memory, Set RS232 Rate, 50 / 60 Hz Video output Toggle, Internal tests burn in tests, All Tests Burn in cycle, Floppy Disk Tests including Test Disk Speed, Quick Test, Install Disk drives, Check 80 - 82 Copy Protect Tracks, Read Alignment Disk, Disk Interchange Test, Disk Exerciser Tests, SCC, VME (requires Loop back cable) also checks for cur-rent Keyboard I.C. Rev., FPU, VME Ram, TOS O.S. Version, 50 or 60 Hz operation and Total ST Memory present. Cartridge only  CB102822 $39.95

MegaSTE LAN Port Shorting Plug For above MegaSTE Diagnostic Cartridge LAN Test   CB102679   $15.00
MegaSTE Serial 2 and Modem 1 + 2 Ports Shorting Plug.Three shorting plugs total required for above MegaSTE Diagnostic Cartridge, SCC / Lan Port Test.   CB102801 $8.00 ea.
MegaSTE Special version External Loop back board With Analog HD-15 Joystick Test ports. Loop back board, less all connecting cables.    CB102678   $100.00

Atari Power Supplies

Mega 2/4 Internal Power Supply with Fan CB101507 $95.00

MegaSTE 110 - 220 Volt Auto switching Stock Atari Power Supply Less Fan and Less mounting bracket/On-Off switch and cover.  CB101671  $115.00

MegaSTE Best Electronics "The Best" Series Auto Switching (110 - 240 Volt 50 / 60 Hz) Power supplyThis UL listed (E132267) power supply has a One year warranty and has a power range of 64.1 - 80 Watts. Less mounting bracket and on / off switch. Requires some soldering (old on / off switch assembly to new power supply) and the Removal of the center (on the power supply board) Screw and mounting screw standoff (under the power sup-ply board) on the power supply mounting bracket. Schematic / print on the power supply included and a replacement label for the power supply cover.  CB102044 $125.00

Atari Replacement Mother Boards

MegaSTE NTSC / U.S. Mother Board, Less all plug in chips   CB102713   Call
MegaSTE NTSC / U.S. Mother Board, Populated (less SIMMs and TOS ROMs).    CB102714   Call
MegaSTE Bare / Unpopulated (No components) printed circuit board.     CB102616  $39.95

Atari Mega 1 / 2 / 4 Reconditioned / Upgraded US QWERTY Keyboard.  These Best Reconditioned Atari US Mega keyboards have all 90 keyboard switches Upgraded / Replaced with the Best Mega ClickTM Mega keyboard new switches which now have a tactile response (slight click noise) when the Mega keycap is pressed and released.  Reconditioned Atari Mega Keyboard less Mega Keyboard cable CB101513R  $85.00

Atari Mega 2 Motherboard, Less all Plug in chips CB101511-LC $125.00

Atari Mega 2 Motherboard Populated CB101511 $235.00

Atari Mega 4 Motherboard, Less all Plug in chips CB102512-LC $165.00

Atari Mega 4 Motherboard Populated CB102504 $275.00


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