Editing Macintosh TV Troubleshooting (section)

== Sad Mac Error Codes ==

The Macintosh TV displays Sad Mac codes for hardware failures during POST (Power-On Self Test). See the [[Sad Mac Error Codes]] page for a complete reference.

'''Common Sad Mac codes for the Macintosh TV:'''
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''Common Sad Mac Codes'''
|-
! Code !! Meaning !! Likely Cause
|-
| 0000000F 00000001 || ROM test failed || Logic board failure, damaged ROM
|-
| 0000000F 00000002 || Memory test - Bus subtest || RAM failure, logic board problem
|-
| 0000000F 00000003 || Memory test - Byte write || RAM failure
|-
| 0000000F 00000004 || Memory test - Mod3 test || RAM or logic board failure
|-
| 0000000F 00000005 || Memory test - Address uniqueness || RAM failure
|-
| 0000000E || Bus error exception || Faulty RAM, logic board problem
|-
| 0000000D || Address error || Logic board failure
|-
| 00000003 || Illegal instruction || ROM or logic board failure
|}

For codes starting with $000F, the second line indicates which RAM test failed. Try replacing the RAM SIMM first.