Kenwood KA-880D Integrated Amplifier KENWOOD Audio Equipment

This is a KENWOOD KA-880D integrated amplifier.

Until the end of October, I was listening to radiko via CD, TUNER, PHONO (records), and AUX connected to a Bluetooth device. All of these produced good sound without any issues. In November, I temporarily removed all audio equipment to rearrange my space due to the installation of a wood-burning stove. After reinstalling the audio board, I reconnected everything. However, the TUNER and AUX inputs stopped responding entirely, and although the CD player worked for a while, it also stopped playing. I removed the outer casing of the unit and applied contact spray to appropriate areas, but the symptoms did not change.

Only the PHONO (record) input continued to play good sound with good balance from both left and right speakers, as before. This suggests that the problem lies with the push switches, etc., rather than the amplifier unit itself.

As an amateur, I cannot perform further maintenance, and I have been unable to find a repair shop in my vicinity. Unfortunately, I plan to replace the equipment sequentially.

Given the above situation, this item will be sold as junk. No returns or complaints, please.

The KENWOOD CD DP-5010 and TUNER KT-880F shown in the 7th photo will also be listed for sale as junk.

★For Reference
KENWOOD KA-880D ¥59,800 (around 1987)
An integrated amplifier featuring the New VIG・DLD circuit and Σ Drive circuit. The New VIG・DLD circuit is a unique Kenwood circuit system that places a VIG circuit between the amplifier and the power supply to prevent power supply noise from reaching the power amplifier, thereby enhancing the performance of the DLD circuit and improving quality. This cuts ripple, signal components, and intermodulation distortion from the power supply, supplying clean energy to the power amplifier. Simultaneously, it achieves an effect equivalent to a large battery, increasing the power supply capacity with a ripple-free, large power supply.
Rated Output (20Hz–20kHz, both channels driven)
120W+120W (6Ω, THD 0.009%)
100W+100W (8Ω, THD 0.006%)
Power Consumption (Electrical Appliance and Material Safety Law Standard): 270W
AC Outlets
Switched with power switch: 2 systems, 100W
Not switched with power switch: 1 system, 400W
External Dimensions: Width 440x Height 144x Depth 343mm
Weight: 10kg