by rjh0566 »
Sat Nov 28, 2009 4:10 am
This 1967-68 rca I have as per the sams I picked up a copy at the library. the Turntable has something called a IC CARTRIDGE with the pop up button.What is this? a magnetic cartridge since this circuit looks like a phono preamp although the cartridge resembles a nornal ceramic cart. I noticed the board on the schematic but where is it located,does anyone know it is a fairly small ic board.its not on the preamp chassis, could it be under the platter?I havent had time to mess with it yet. To start with it does not sound well no lleft channel could be the needle,low on one channel so I hooked an ipod to the rca jacks from the phono, sounds good and equal on both channels.Ive noticed the plastic chrome has worn off this turntable also,also makes a low hz whining noise that sounds like a sick bird right before it shuts off on last record.It does go through the record changing function and holds correct speed thoughout and a plus it does have the speed adjustor and strobe!!Heres what I have in mind I have another rca turntable from 64-65 model. without anything special.has the rca jacks on the bottom like the IC model, looks like brand new and works good, Do you think this swap its worth a shot or does this preamp need the IC circuit . Also curious why did rca shorten the spindle on the '68 model, for less records?