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Hi, I need your opinions for possible fault location or failed components. Recently when I turn on the amplifier there starts a hum. You can hear it if you get close to speakers. Sometimes the hum goes away after 5 to 10 seconds with a low dissipating buzzing noise. It comes back as soon as...

Thanks for your reply. Did the noise caused any problems? How long did you use it like that?

Hi. This post is quite old but I have a smiliar problem. Have you been able to idenfy the cause of the noise? If yes could you please provide some details? Thanks.

When checking the unit observed that on RC 15 khz slider led is illuminated even though the equalizer switch was off. But it was only possible to see that it is illuminated in dark environment. Then I cleaned the slider with Deoxit Fader F5. Then the led was off and no humming.

Hi. I have the same problem at my SG-300 on left channel. Any feedback on the solution may be very helpful. Thanks.

Hi, It is a SA-8800. Pop happens after relay closes. Have to try -20db muting. I can not check it at the moment. Thanks

Hi, With loudness on, if I turn the amp on, there is popping from speakers otherwise not. Only loudness is on and all other controls are flat or off. Could this be a sign of a problem? Thanks

Hi. There is a dent o the metal grill of the HPM 110 super tweeter HP-015A. Is there an easy way to correct this dent without damaging the inner foil? Thanks. Happy new year.

Hi. Found one through ebay sone time ago but followed almost every day to see if any is available. Good luck.

Thanks for your reply.

Thanks a lot for your feedback. Could this be some other problem?

Hi, Intermittently RHS play direction indicator won't light up even though the deck is playing in that direction without problems. The LHS one is ok. Any suggestions (experiences) about the cause of the problem and how to solve it? Thanks

Ok. I got the message. Thanks for your replies.

Thanks for your reply. Is it possible to know which one is which? LHS one or RHS one?

Hi. Can you help me on below matter: There is a pioneer DV 515 DVD player. Plays DVDs without problem. It skips and or hesitates to identify on some CDs . The same skipping CDs can be played on another player without problems. On the DVD integrated board there are two adjustments one for master...

Hi. Can you help me on below matter: There is a pioneer DV 515 DVD player. Plays DVDs without problem. It skips and or hesitates to identify on some CDs . The same skipping CDs can be played on another player without problems. On the DVD integrated board there are two adjustments one for master...

Hi, I am looking for a service manual to adjust Pioneer TX-7800. Anybody who can provide the manual? Thanks.

Hi, Is there a way to change region code at Pioneer DV-414? The procedure described for DV-515 wont work. Thanks

Yes, I do. I will not leave a CD/DVD inside. Thanks for the manual and suggestions.

I will keep his answer under consideration. Do you have any suggestion on how to reset DV-515?

Thanks for your feedback. The unit is a DV-515 Pioneer. In the forums (for DV-414) I have seen that pushing stop button and switching on device would reset it but mine won't do it. Any ideas?

Hi. I would like to hear your opinions on the below problem: There is CD in the drive but the unit is off. Then when I turn on the unit, dvd player tries to initialize but wont recognize the CD and open is displayed on the screen then the tray opens. When I push the tray button and tray closes...

A is "JBL TLX 171" and B is "B&W 685". https://www.hifiengine.com/manual_library/jbl/tlx171.shtml https://www.hifiengine.com/manual_library/bowers-and-wilkins/685.shtml

Reversed terrminals of speaker B it is much better at A+B but B alone not good. Thanks for your help.

Reversing connections would not damage amp or speakers?