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Search took 0.00 seconds. Search: Posts Made By: bob_g
Forum: Video Hardware Repair 11-03-2025, 10:45 AM
Replies: 5
Views: 612
Posted By bob_g
Those old supplies really did have a run of bad...

Those old supplies really did have a run of bad caps. I did scope out for ripple on the DC rails but all looked clean, so starting to suspect some hardware fault possible on the main board. Wish...
Forum: Video Hardware Repair 11-01-2025, 12:00 PM
Replies: 5
Views: 612
Posted By bob_g
Thanks for the ideas. Yes those power supplies,...

Thanks for the ideas. Yes those power supplies, don't know how many I've replaced on the VTM-420s. Was also thinking it might be a failure on the main board, I did pull out all the option boards, but...
Forum: Video Hardware Repair 10-30-2025, 07:51 PM
Replies: 5
Views: 612
Posted By bob_g
Troubleshooting Harris VTM-4100 fault condition?

Hi, I'm looking for any troubleshooting info for a old Harris Videotek VTM-4100 rasterizer. The unit was working, one day it just powered up into a FAULT condition (LED lower right front panel was...
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