My Amiga 4000 developed a VERY dim display during the recording of my recent video on the Fastlane Z3 SCSI/Memory card. A day after that video dropped, my Amiga 4000s display was down to maybe 5% of its normal brightness and HAD to be fixed.
Follow me, as I work through all of the candidates that could cause the problem. Was it simply a monitor on its way out? Or the LISA graphics chip? Maybe resistors between the video DAC or the DAC itself is where the problem lay? Watch and see how things shake out.
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TheRetroChannel: How to improve the video output from retro systems
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00:00 - Intro
02:30 - How Dim is Dim?
05:20 - Is it the Monitor?
07:45 - Is it the LISA Chip?
08:53 - Could it be the DAC?
09:09 - The ADV7120 DAC
11:11 - The Chips RGB I/O
15:41 - The DAC's Controls
16:19 - The COMP
19:16 - The Vref
21:01 - The FS Adjust
23:38 - Final Checks
25:17 - Ordering Components
27:59 - The Repair
31:04 - Conclusion
#amiga4000 #retro #retrocomputer #amigas #computerrepair
Негізгі бет Amiga 4000: Repairing Extremely Dim Video
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