1481/Repairs: Difference between revisions
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(Created page with "1481R Vertical Scan fault whereby v scan is crushed as position is moved up. Corrected by replacing Q1617 (used to hand 2N2891 to replace 151-044600) 1481C No video, just horizontal line Noted that many semiconductors on vid/vscan board are in sockets (presumably for easy selection on test). By wiggling these socketed components in their sockets, video was restored.") |
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1481R | 1481R - | ||
Vertical Scan fault whereby v scan is crushed as position is moved up. | Vertical Scan fault whereby v scan is crushed as position is moved up. Corrected by replacing Q1617 (used to hand 2N2891 to replace 151-044600). | ||
Corrected by replacing Q1617 (used to hand 2N2891 to replace 151-044600) | |||
1481C | 1481C - | ||
No video, just horizontal line | No video, just horizontal line. | ||
Noted that many semiconductors on vid/vscan board are in sockets (presumably for easy selection on test). | Noted that many semiconductors on vid/vscan board are in sockets (presumably for easy selection on test). | ||
By wiggling these socketed components in their sockets, video was restored. | By wiggling these socketed components in their sockets, video was restored. | ||
Latest revision as of 03:34, 9 February 2025
1481R - Vertical Scan fault whereby v scan is crushed as position is moved up. Corrected by replacing Q1617 (used to hand 2N2891 to replace 151-044600).
1481C - No video, just horizontal line. Noted that many semiconductors on vid/vscan board are in sockets (presumably for easy selection on test). By wiggling these socketed components in their sockets, video was restored.