I have a pioneer vsx-456 and it just overheated the other day, i can only get it about 1/2 of 1/4 of the way up and it just craps out. I can get my large (22") room fan and make it go a little over half but then it heats again. I have to take the cover off and place it on its side and direct the fan in the top and out the bottom for it to get half way up.
Any suggestions? email me if you need further info
zspada15 at gmail dot com
2007-02-28 04:31:02 · 6 answers · asked by zspada15 1 in Consumer Electronics ➔ Home Theater
When you say it just overheated the other day are you saying it didn't before? If it was fine before and now overheats I would wonder if one of your speakers/speaker wires has a problem. Also, does the impedance of the speakers match the requrements of the amp? How high are you setting the bass controls? Lots of bass requires lots of power.
2007-02-28 04:42:45 · answer #1 · answered by gkk_72 7 · 0⤊ 0⤋
If nothing has changed, such as new speakers, new placement of the amp, or adding speakers, and if your connections are good, it is a service issue. This would indicate that the amp is drawing excessive current internally, which is causing the output transistors to overheat, which then triggers the internal protection device. If this is the case, get it serviced before the excess draw takes out other circuitry which could end your amp's existence....
Do check connections and for stray wires carefully!
Good luck!
Also, since you have the cover off, make sure nothing fell into the amp. I had a round heatsink fall off of a transistor and into the circuitry many years ago. It was causing a short on the pc board, and doing something very similar to what you are describing. It was pure accident that I discovered it, and I was about to send the amp to be serviced....
2007-02-28 11:20:16 · answer #2 · answered by piano guy 4 · 0⤊ 0⤋
Pioneer Vsx-456
2016-11-12 07:16:02 · answer #3 · answered by ? 4 · 0⤊ 0⤋
there is problem with one of the transistors or drivers in the amplifier - cooling it with the fan makes it work longer as it keeps the component from over heating.
suggest taking it to local hifi store to see if they can recomened a s service place - consider that at $65-75 dollars per hour for service plus parts it might be just as inexpensive to purchase a new or refurbnished unit
2007-03-03 13:56:55 · answer #4 · answered by mrdg90 4 · 0⤊ 0⤋
Something is probably wrong with your system set up. For example, you may be using too many speakers, or speakers with different impedence ratings (they all need to match). One way or another, it sounds like you are over-driving your amplifier. Is there anything on top of your reciver? There shouldn't be. It need sgood ventilation.
2007-02-28 06:00:16 · answer #5 · answered by JeffyB 7 · 0⤊ 0⤋
1st do not place it on it's side, it is not made to work that way
2 check you contections you probey have some wire touching another wire some where and that will over load the amp really fast
3 check how many ohm's you speakers are, your recever is set up to be made for 8 ohm's and maybe you speakers are 4 ohms
2007-02-28 08:20:55 · answer #6 · answered by bkbarile 5 · 0⤊ 0⤋