Integra DTR 6 staying in standby

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- EricT59
  
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posted
11 years ago

Tue, Oct 30, 2012 12:51 AM

My Integra DTR 6 receiver intermittently goes to standby or will stay in standby. I happened to see a beat-up DTR 6 on ebay that was supposed to work so I bought it only to find out that it has the same problem. My originally actually works more consistently- ya. My plan was to swap the beat-up parts but now I have two receivers with the same problem.

I had some electrical training a long time ago that I never used so I can be coached hopefully. I also got the schematics from online.

Any help/guidance is appreciated.

PS - I know this receiver is really not worth the effort but it has some sentimental value and it is now a new challenge.

Thanks, Eric

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EricT59

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- N_Cook
  
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posted
11 years ago

Tue, Oct 30, 2012 8:25 AM

If receiver and amplifier then protection circuit problem , imbalanced rails, cap or zener problem or failed (SIL usually) protection IC

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- Mark Zacharias
  
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posted
11 years ago

Tue, Oct 30, 2012 12:09 PM

cap or zener problem - cap very possible; zener - wrong.

Protection IC - wrong. They rarely fail, besides, modern receivers don't use them and have not for about 12 years now. Protection functions are in the microprocessor.

Imbalanced rails - possible, particularly if they are "borderline" but unlikely in this case, as no protect indication on the display. If it were a protection problem I would suspect there would be some such indication such as "Protect", "Overload" "Error" or some such on the receiver's display at the time of failure.

I might start by examining the standby voltage itself, as well as reset and AC detect lines.

Could be as simple as bad solder connections at the standby transformer. Common problem.

Mark Z.