I have a Hitachi HT-45 turntable that I have tried to hook up to my receiver. When I connected the turntable directly, I had to crank the volume on the receiver just to get sound.
I tried connecting the turntable to an Adcom GTP-400 pre-amp, which worked for a while but then the sound quality deteriorated and now I have no sound at all from my turntable! All of my other devices (DVD, VCR, CD, cassette deck)work perfectly, and the turntable itself is in working order.
I've also tried re-connecting my turntable directly to the receiver, but now that's not working either!
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Hello KAMAL, This means that the unit is going into protect mode. This is typically caused by something internal or a speaker connection could be causing it. To isolate if it is a speaker or the receiver you would first have to turn it off and disconnect all of the speakers. Turn the unit back on and turn the volume up to 45 with no speakers connected. If the unit stays on then you will know that one of the speakers was causing this short to happen. If that is the case I would check all of your connections. If the unit turns off when the receiver has no speakers connected then it is an internal issue and it would have to go for service. Thanks, FJD
The only output from the turntable is the low-level signal from the cartridge. Most likely, the receiver you've hooked it to doesn't have a phono input. Many receivers today don't come with one, and if you connect the turntable to a line-level input you get either very low volume or none at all, depending on the cartridge. What you'll need is a turntable preamp to boost the output to line level so the receiver will work properly. Radio Shack still carries a preamp, available online and in some stores. You can also find preamps online (here's one at Amazon). With the preamp connected you can use any free input on the receiver.
Let's figure out which hardware is failing. Connect the phono preamp to the CD or tuner input to see if it works there. It should. If it does, your receiver is at fault. Did the front panel controls get damaged?
How did the turntable fare in this accident? As a basic test of its ability to produce sound, hook it directly to the CD input and raise the volume slowly while playing an LP. If it's alive you'll hear a very weak, tinny sound, but I assume you know that or you wouldn't have a phono preamp in the first place and would probably be asking why the TT sounds so poor. :-)
It will need a pre-amp to connect it to your newer amp. The old style turntables normally used a magnetic cartridge that older receivers / amplifiers had a special phono input (which incorporated an internal pre-amp) to connect and hear at normal volume settings. Newer receivers / amplifiers normally do not have this type of phono input, thus the need for an external pre amp device.
The reason why your receiver is going in protect is because there is a short circuit happening. This would either be on your speaker wires, speakers or receiver itself. What you want to do to check would be:
1. Unhook all sources and speakers from your receiver.
2. Turn on your receiver and crank up the volume to maximum, if your receiver does not shutdown or go on protect then the receiver is OK. If it does shutdown and go on protect then its an internal problem on the receiver and you would need to send that over to an authorized service center.
3. Hook up a source and 1 speaker. Play something from the source or the fm tuner, Crank Up the volume to about 46 or 47 volume. If the receiver does not shutdown, its good.
4. Hook up a second speaker and repeat the process until you encounter the pop and shut down
if for example you encounter the pop on the 4th speaker, try changing the speaker wires.
5. If the receiver still shuts down then it would be a short on the speaker itself and it would need to go to an authorized service center.