My friend's onkyo TX-82 tuner amplifier is plugged in to a working outlet. the sony CD player that's plugged into the onkyo still receives power, however, the onkyo is not. it has worked fine for years and then, well, i think i did smell something burning before it stopped working completely. i haven't opened it up to look inside, yet. there are no visible problems in the back at all the connections.
any ideas on this one? can i fix it on my own as a surprise gift so my friend can have music again?
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Re: not receiving power
Unless you have repaired circuit board assemblies in the past including replacement of board traces, there is little possibility of home repair here because ".... think i did smell something burning before". Sometimes the manufacturer will include an on-board fuse. You can open the case and look for this, but it may be too late. Fuses may never emit a burning smell even after they "burn", unless it is a slow-type and not encapsulated and you have a keen sense of smell. Sometimes the power section may include large power resistors; large because of the wattage they must dissipate. Look for one of these burnt and replace, but he actual burned part may be hard to find unless you have very good bench-testing tools and instruments. Bottom line is ...highly unlikely, "can i fix it on my own".
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to use it with either decks or a mixer check to see if it has record out and play in ("REC OUT"/"PLAY IN") for tape 1 or tape 2 if so you can use a mixer connected there. If no tape inputs or record out you could only use the CD ("tuner" is a internal selection not an input selection) as play back connections.
Post back if you have more questions
It may be your amplifier protection circuitry is being activated and shutting down automatically. This is usually caused by a faulty output transistor in one or more of the channels. I recently repaired my Onkyo TX-SR500 which had this problem.
Using a multimeter on ohms check between C and E on each of the ten output transistors. I found Q6051 and Q6061 to be short cct on all pins. Once you have located the faulty channels check the adjacent components for open or short cct.
I replaced the following components,
R6091 (2.2ohm fusible)
R6081 (2.2ohm fusible)
R6101 2x 0.22ohm 2W
The amplifier now works perfectly, cost of the parts is about $15-$20.
If you don't feel confident doing this yourself just find a friend or tech who can do it for you.
My configuration: ZONE 1 (living room) DishNetwork Dual Tuner DVR Tuner 1 [S-Video out] -> [S-Video in] ONKYO TX-SR875 [HDMI out] -> [HDMI in] Sony KDS-60A3000 rear projection TV
ZONE 2 (living room) DishNetwork Dual Tuner DVR Tuner 2 [Composite Video out] -> [Composite Video in] ONKYO TX-SR875 [Composite Video out] -> [Composite Video in] Samsung AQUOS LCD TV
Problem: ONKYO receiver stops sending video signal to my ZONE 1 Sony TV through the HDMI connection. ZONE 2 may still receive video. (NOTE: the issue might be related to the upconverter circuitry?)
Symptom: I couldn't see any video, but I could hear the Tuner 1 audio through my ONKYO. An important clue is that I couldn't see ONKYO's on-screen display menu on my TV when hitting the [Setup] button on my remote. But, I could see my TV's Sony-based menus and display options.
Solution: 1. Put all ZONES in Standby mode using the remote. Hit these buttons on remote: [Receiver], then [Standby]. [Receiver], [ZONE2], then [Standby], [Receiver], [ZONE3], then [Standby]. You should NOT see any lights on the ONKYO except maybe one red led near the power button. 2. Pull the power plug out of the back of the ONKYO, and leave unplugged for 20-30 seconds. Turning off any power center it is connected to isn't enough. You MUST unplug the power from the back of the ONKYO for 20-30 seconds. 3. Reconnect the power cord to the ONKYO. 4. Using the remote, set ZONE1 to a video source known to be working. If you don't see video, try leaving the power cord off for a longer period.
I know it sounds too simple to work, but that's what brought the video back for me the few times the video stopped displaying. Hope it works for you.