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Main => Monitor/Video Forum => Topic started by: castlesteve on September 06, 2007, 03:23:25 pm

Title: 25k7401 flowchart or Vertical question...
Post by: castlesteve on September 06, 2007, 03:23:25 pm

Is there a 7401 flowchart out (like the 7000 series)?

I am getting ready to diagnose a NO VERTICAL DEFLECTION problem.  In most of these cases it was C51, 50hz or worse case IC2...  but in this case the 7401 doesnt have these parts.

Should I just start with replacing U601 or is there something else to test first?

Title: Re: 25k7401 flowchart or Vertical question...
Post by: sarge on September 06, 2007, 10:21:51 pm

Check all 600 series electrolytics, D603, Substitute U601 (TDA1771).  If all those check good, check your 25 volt supply line coming off your flyback.