Question about Audio Players & Recorders
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Posted on Jan 02, 2017
you can check the output transistors for short circuits with the low ohms range or diode checker . If they have failed, then it is often a good idea to replace all as much stress can be placed on an output array in this type of failure. to repair reliable, all outputs on an offending channel should be replaced.
Make sure the fuse you replaced was the same type of fuse. check markings.... T stands for sloblo... a fast blo duse may let go at turn on. The power supply may have a shorted rectifier diode in it also.
be aware however, every time a fuse of that rating blows... more damage may be occurring to the amp.
Posted on Dec 15, 2007
The problem is, that your SH-AC300 needs an amp with 5.1 input (but no decoder). For this purpose technics delivered SA-AX710.
So if you'd like to use your current equipment it would be impossible.
The only option is for you to buy 2 more Power Amps (SE-A900S), so that each of 3 amps would take care for one part of music. (one for FL, FR; one for RL, RR; and one for sub and center).
Another option is for you to buy SA-AX710. Then all the problems would be solved with it.
Posted on Feb 24, 2008
SOURCE: KRF-5030D i stand by mode
Does it go into standby when it's in another mode like : Cd or Video 1 or tape?
When you state that you checked the power amp IC's , how so did you do this?
Thanks n' let me know.
Posted on Mar 17, 2008
SOURCE: I have a kenwood KA-94
Unit may have any one of several problems: defective or shorted speaker(s), -- ICs work within certain circuit paremeters; B+&B- voltages from power supply also provide voltage to secondary drivers and biasing circuits. Any shorts and/or transistor leakage may cause failure under load. The entire circuit should have been tested before use
Posted on Aug 19, 2008
Have you checked within the set, the fuse and if the standby circuit is working. thre could be a failure of this sub votage which is required for the switch on of the main power. If you do not have any standby indication you must check this section, however if you arre getting the standby you would have a failed output or a shorting that is triggering the error amp to swtich off. If you are familiar with the circuits you can check but I would suggest that since you will need more experience to look into the main board for tracing the fault. In such case check for the service centre nearest to the place you are in using a google search for Pioneer - Audio systems- sevice. Helpful I hope. Good day.
Posted on Jul 06, 2010
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