KR4me2
New Member
Great site! Thank you "mods" for your time and efforts. :thmbsp:
Found a clean KR-7600 with no power. On/Off sw was pretty lose from front side. Found the contacts inside of switch toasted/gone and some of the bakelite broken! Was able to use the other side of the STDP contacts and we now have power after repalcing the 6A main fuse. (Am currently using a Poiwer strip to save my precious remainig contacts until i can add a relayed power sw circuit or see if the Pioneer SX sw i ordered will mount up)
Deoxed/cleaned and amps sound good. Problem is that when first tried the FM Stereo got a terreble pulsing from both channels when on dead center of tuning. Off center or mono the output would clean up but of course not in Stereo. Fired KR up the next day and wow FM seems to work but with the right channel poping at random when the tuning locks in the PLL section. Again off center and poping ceases. Traced the pop back to pin 5 of the HA-1156 MPX. Have IC on order now.
The queston i have is that the tuner board in the KR-7600 i have is marked p/n X05-1420-10. The SM calls out p/n X05-1320 and the schematics nor board layout are the same as the X05-1420 in the receiver? Anyone know where i can find the schems for the X05-1420-10 tuner board?
Found a clean KR-7600 with no power. On/Off sw was pretty lose from front side. Found the contacts inside of switch toasted/gone and some of the bakelite broken! Was able to use the other side of the STDP contacts and we now have power after repalcing the 6A main fuse. (Am currently using a Poiwer strip to save my precious remainig contacts until i can add a relayed power sw circuit or see if the Pioneer SX sw i ordered will mount up)
Deoxed/cleaned and amps sound good. Problem is that when first tried the FM Stereo got a terreble pulsing from both channels when on dead center of tuning. Off center or mono the output would clean up but of course not in Stereo. Fired KR up the next day and wow FM seems to work but with the right channel poping at random when the tuning locks in the PLL section. Again off center and poping ceases. Traced the pop back to pin 5 of the HA-1156 MPX. Have IC on order now.
The queston i have is that the tuner board in the KR-7600 i have is marked p/n X05-1420-10. The SM calls out p/n X05-1320 and the schematics nor board layout are the same as the X05-1420 in the receiver? Anyone know where i can find the schems for the X05-1420-10 tuner board?