SOURCE: Pioneer SX-750 Old School Need Help
It could be a dirty control or switch, working them back and forth could prove that. Other than that, It's likely bad outputs. A unit that old may have transistors for outputs but might be IC's. Transistors can be tested with an ohm meter to see if they're good or not. Also if it has transistor outputs, they may have a small value resistor on the Emitters, check those as well.
Hope that helps...
Geno
SOURCE: SX-1600 + KD-491F
Hi again,
It would seem that you posted the problem here also. With your kind permission, I will repost my excerpts of my responses that others may benefit on similar concerns.
A. Most current receivers no longer include a PHONO input. Perhaps what
could be done is to purchase a phono to line level pre-amplifier to go
along in your purchase for a new receiver.
I was made to understand that the Pioneer SX-1600 is prone to speaker output problems which could either be:
1. the speaker relay (protection); and/or
2. the amp, STK4191II Stereo Module.
Either
should be relatively easy to work on and perhaps you can try the
services of a locally available qualified electronic technician since
the repairs would not be too specialized. The service manual may be of help (or at least a schematic , they may be downloaded from here and here).
B. To recap what you need is a receiver that can accommodate:
4 - Pioneer S-DF1-K (15-100W, 8 ohms)
1 - Pioneer PD-F407 25 Disc CD Player
1 - Pioneer CT-300 dual tape deck
1 - Kenwood KD-491F turntable
C. Possible choices are (keeping in mind that the power output should be less if not equal to 100 watts and a turntable/phono input):
i. Onkyo TX-8522 Stereo Receiver;
ii. Yamaha RX-397 100 Watt Natural Sound AM/FM Stereo Receiver;
iii. Sony STR DE695 AV receiver;
iv. Teac AG-790 200 Watt Stereo Receiver;
v. Denon AVR 888 - AV receiver - 7.1 channel.
Some of the above also includes feature(s) to hook up to your video system. Some may even require a fifth speaker (subwoofer).
Incidentally, you can also choose another brand/model even without a turntable/phono input. As initially posted, a turntable/phone to line level pre-amplifier is only required. Here are some examples:
a. XP200 Turntable Preamp - Nano Series;
b. Pyle® Pro PP999 Phono Preamplifier;
c. Pro-Ject Phono Box Turntable Preamplifier;
d. Radial J33 RIAA Turntable Preamp Direct Box
Good luck with your project.
SOURCE: Pioneer turntable Pl-560 and Pioneer Receiver VSX-D409
Magnetic phono cartridges like the one on your pioneer has an output of about .005 Volts, the standard inputs are looking for 1 to 2 volts for fulol out put, the phono preamp will step up the output voltage to 1 volt so you can play it thru a non phono input like Aux, tape or tuner.
Radio shack sells cheap ones and you will hear what you pay for.
I sell turntables and audio gear, check out www.soundsciencecat.com
Good Luck,
Neal Van Berg
SOURCE: I need to connect my turntable to my reciever via Pioneer GR-470 pre-amp
no need for phono, you can go to radio shack and get a selection switch to make things easier.
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