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Again needing help fixing Orion HCCA 225 Digital Reference
Again needing help fixing Orion HCCA 225 Digital Reference
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Old 9th June 2018, 04:09 AM   #31
Perry Babin is offline Perry Babin  United States
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Retest but this time, look at the time it takes to get to very near the reference voltages. It should only take 5 seconds(?) to get to where the muting transistor has essentially no effect on the audio level.
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Old 9th June 2018, 04:35 AM   #32
Chopperbuilder is offline Chopperbuilder  United States
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I tested twice. The first test it took a more than a minute( the amp had been sitting since the previous tests). I let the amp sit for 5 min and retested it and it took 50 seconds.
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Old 9th June 2018, 04:42 AM   #33
Perry Babin is offline Perry Babin  United States
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Is the capacitor that you replaced near the transformer still out?
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Old 9th June 2018, 04:52 AM   #34
Chopperbuilder is offline Chopperbuilder  United States
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No it is not still out.
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Old 9th June 2018, 05:02 AM   #35
Perry Babin is offline Perry Babin  United States
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Remove the transistor that is next to it.

Does that change the mute delay? Removing the transistor will increase the time to regain mute mode.
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Old 9th June 2018, 05:48 AM   #36
Chopperbuilder is offline Chopperbuilder  United States
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I removed the transistor next to it. I'm assuming by asking me if it changes the mute delay, you the meant for me then to re-run the tone output test...

I ran it three times with the following results:
1st test -55 seconds
2nd test - 1 minute 45 seconds
3rd test - 1 minute 15 seconds
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Old 9th June 2018, 06:27 AM   #37
Perry Babin is offline Perry Babin  United States
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Do you have any spare resistors 47k to 100k that you could connect across the 221k resistor?

Did you smell anything that smelled like antifreeze when you initially replaced the mute delay cap (near the transformer)?
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Old 9th June 2018, 06:39 AM   #38
Chopperbuilder is offline Chopperbuilder  United States
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I don't have any spare resistors in that range but I can pick up a couple tomorrow.

I did not notice anything that smelled like antifreeze when I replaced the mute delay cap.
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Old 9th June 2018, 06:49 AM   #39
Perry Babin is offline Perry Babin  United States
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I can't guarantee that it's going to tell us anything so don't go out of your way to get them.
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Old 9th June 2018, 06:52 AM   #40
Chopperbuilder is offline Chopperbuilder  United States
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Okay. So what's next?
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