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 Post subject: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Wed 27, 2019 9:17 pm 
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Location: York, PA
I have a Pioneer SX 626 receiver. When I turn it on it takes a few seconds to play; yet it is solid state. Bad power caps?

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Wed 27, 2019 10:17 pm 
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Does it have a relay?

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Wed 27, 2019 10:32 pm 
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No relay in that model. I would start by checking the power supply voltages, could be a bad cap there?

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Wed 27, 2019 11:45 pm 
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Location: York, PA
No relay I can see. Will test power caps. In is in the que of future projects.

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 5:39 am 
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Location: Houston area, TX
With volume at mid range, does the audio come on slowly and distorted (crackly, buzzing, sizzling, etc.), or does it come on abruptly with no distortion?


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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 12:44 pm 
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Joined: Feb Sun 01, 2015 1:03 am
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Location: York, PA
Comes on with perfect sound! Just that momentary delay like you get on a tube amp warming up. That is why it confused me. A SS receiver does not typically warm up!

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 3:12 pm 
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Location: Utica, NY 13502 (USA)
A slight delay in non-relay protected, solid state amps is not uncommon. Large-value power supply filter caps used in solid state amps cannot be expected to charge up instantly. I would say your receiver is operating normally.

Dave


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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 5:26 pm 
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Joined: Aug Fri 12, 2016 1:49 am
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Location: Houston area, TX
Keneye wrote:
Comes on with perfect sound! Just that momentary delay like you get on a tube amp warming up. That is why it confused me. A SS receiver does not typically warm up!

Is this a new unit to you? Has it done this as long as you've owned it or is this a new symptom? Obviously, if a new symptom, then something's not right. If it's always done it, then it's by design.


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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 9:28 pm 
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Location: Utica, NY 13502 (USA)
How long is "momentary"? Most tube amps take 15 - 20 seconds to warm up. Some are much longer if the preamp tube filaments are powered by the output tubes' cathode voltage.

Dave


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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 10:37 pm 
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SM:  Service Manual. 1973

http://www.kallhovde.com/pioneer/Pionee ... 0page.html

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Thu 28, 2019 11:45 pm 
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Location: Lehighton, PA.
It's operating normally. Don't look for trouble where there isn't any.

Larry

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 Post subject: Re: Pioneer SX-626 SS needs warm up???
PostPosted: Mar Fri 29, 2019 12:50 am 
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Location: York, PA
Larry, are we taling receivers or marriage?

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Keneye
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