Üdv!
Keresem a fenti erősitő szervizkönyvét vagy rajzát.
Köszönöm a segitséget!
sanyika45
Hello,
I am working on a Kenwood KA-V9500
and I am looking for a Service Manual.
Any info is greatly appreciated.
Thanks,
Dan
Hello,
I recently purchased a used Kenwood M-9000 SS micro Hi-Fi system, but unfortunately, the unit is not functioning correctly. When I power it on, the display is stuck on the message "Waiting for PC Wizard", and the device becomes completely unresponsive – it does not react to any buttons or remote control inputs.
From my research, it seems that this issue may be caused by a missing or corrupted firmware, particularly related to the Sunplus SPHE8202 chipset used inside the device.
I have been trying to locate the correct firmware file (possibly DVDROM.BIN) that matches the hardware (the board ID may be BD305890BB9B50), but so far, I have had no luck finding a working download source.
Could someone please help me with:
-
The correct firmware file for this model
-
Instructions or guidance on how to recover the system using a USB flash drive
-
Any experience with solving this "Waiting for PC Wizard" message on similar Sunplus-based systems
Any help or direction would be greatly appreciated!
Thank you in advance.
Best regards,
Dejan Todorović
Hello,
Last week I picked up a nice Kenwood KA-3500 40watt intergrated amplifier in pretty good shape.
Upon using it a bit more, I noticed a bit of distortion at high volume, more so in the left channel. I checked the DC offset at the speaker terminals, and the L channel said 100 mV, while the R was 25 mV. I understand this isn't so good for the L channel at least, but unfortunately this amp doesn't have any DC offset adjustments. Am I right in saying that to fix this I'd have to replace the output transistors?
--
On a related issue, in the service manual I found the section on BIAS adjustment, and I read online how it can affect the DC offset. So I hooked up my voltmeter to the test points, and I got 4 mV on the L, and 8 mV on the R. In the manual it says should be 40 mV.....(!). Is there something wrong here? I tried carefully adjusting them, but they only go to 30mV with the pots fully on, this doesn't seem right to me.
--
I compromised at 20 mV BIAS for both channels, and now the DC offset is 50 mV for L, and 5 mV for R, which is better, less than half what they were. I'm wondering, will I damage anything doing this, should I put them back to where they were?
--
The service manual is on site here.
Let me know if you want me to upload an english copy of the Owner's Manual, it has a better schematic in it all on one page, easier to read.
I've also included some pictures. They're not my actual unit, but mine is exactly the same, but less dusty.
--
Thanks for reading this. Many thanks in advance, and have a peaceful Palm Sunday! :taps2:
Bellarmine