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Equipment Repairs => LCD TV forum => Topic started by: Contrast John on April 16, 2010,13:01:35

Title: Maxim 11-57 (Profilo 05TA 071B power board)
Post by: Contrast John on April 16, 2010,13:01:35

Hi All
Need a schematic for this power panel (05TA 071B). Have only got standby 5volts and a momentary 24volt inverter supply present. The other lines are missing. All electrolytics have been changed and cant see any obvious signs of stress. Secondary/control side of circuit seems a bit different to the 05TA 132 panel so reckon I need the right circuit to progress.
Cheers
John.

Title: Re: Maxim 11-57 (Profilo 05TA 071B power board)
Post by: Contrast John on April 17, 2010,12:55:36

Hi again
Got it sorted;
No 6volt or 16volt rails present (as marked on plug socket). Replaced Q300 (BC547), Q302, (BC848) and zener diodes D318 (2.4volt) and D315 (12volt). Fortunately these items are in the primary circuit of one of the power supplies which is the same as in other Profilo power circuits.
John.