Having successfully repaired a KVM-2131U recently (faulty non electrolytic in horz output) I noticed all the DC output voltages were high. (+B was 165V , +7v is +11V ) I compared them with those on a working KVM-2121U ,(almost identical inside) , these were all high by the same amount. Can someone give me the correct voltages for both please?
Since it is a Sony, +B should be 135V. Only a few models have lower +B, never seen anything higher.
-- Met vriendelijke groet, Maarten Bakker.
Too high a voltage can be caused by a 100k or 150k resistor in the feedback circuit (R522 in AE-1B and AE-1C chassis, not sure what chassis you have) drifting off-value. Also, double check your meter is functioning properly, since it also reads high on a good working TV set.
-- Met vriendelijke groet, Maarten Bakker.
Where are you measuring these voltages..?/
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