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TEAC AG-D9100 hi,my AV amp. suddenly freeze, the multi functional display show PROTECTED,recently the sound sometimes just tone down and recover after a short while,can i know what actually happen?
I have actually one in my shop for repair and beleive me, after 30 years of experience in electronic repairing, this amplifier is the worst conception i ever saw. It heats like hell in there, bad conception. They made an amp to make money. Put it in the garbage. I saw it in there, don't repair it, put it right in the garbage. Sorry but it's the thruth. Best regards.
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Check mute is in off position. If problem persists, the check plus minus 5V supply section and measure voltages at IC30.
Here is service manual for help.
I'd connect it between the "Tape 2 Monitor" jacks. On the TEAC, the "Record" jacks are audio OUT and the "Play" jacks are audio IN.
Connect the Record to the EQ's IN and the Play to the EQ's OUT.
Select your source (AM, FM, Phono, CD, etc. and when you select Tape 2 Mon, you'll pass the signal to the EQ to shape the sound of the source. With it unselected, you'll bypass the EQ.
Best way to hook up equalizer is see if receiver has preamp outputs that can be connected to amp inputs. If so hook up equalizer to them and you are in business. Or you can hook up equalizer to the output of the device you want equalized and then hook up the EQ output to any receiver input.
Check your speaker and speaker connections. Do you have normal display? If so, after checking your speaker and speaker connections and they are ok, you might have a problem with one of your output elements (Mosfet).
This can be related to a fault in the potentiometer as it cut off the tracking of the voltage and gets back to feed the digital circuit. You need to check, sometimes a switch cleaning oil can help. Try to wriggle the pot control many times as it can help, if not replace.
You have to enable them and turn the volume on them up separately with the speaker config, level trim, and up/down select buttons on the remote. You can also adjust the rear speaker delay time or just hit the test tone button and adjust the volume on each speaker separately as it goes through them one at a time...
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