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| sjoerg |
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Posted: 09 Aug 2017, 17:17
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I think it should auto detect if hooked up correctly, make sure you have the amp set on channel that corresponds with digital input the apd-1 is connected to.
You should not be selecting any analog channels on the player, that will play the analog mono track, not ac-3
As said make sure you're converter is working.
here's some info:
http://home.q03.itscom.net/nsa/YamahaAPD-1.htm |
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| signofzeta |
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Posted: 09 Aug 2017, 17:22
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The AC-3 jack is always active. As long as there is an AC-3 disc in the player, currently spinning, it's putting out AC-3*. You can't select anything, on any LD player, just plug it into the demod. It will convert the RF to the entire 5.1 DD, over SPDIF or descrete channels like my HK ADP303.
On the receiver you select whatever input your demod is hooked to and anything made that can see 5.1 will see it.
If this doesn't work there is a problem, I think it's usually the demod's fault but that's pretty rare too.
FYI, to save licensing costs there is zero actual Dolby Digital technology in a LD player, not even the logo, except DVD combo units and they still only output DVD DD. All it does is give you a breakout to one weird section of the FM waveform, thereby letting you access an AC-3 encoded version of a compresssd 5.1 digital signal. That signal "happens" to be DD but it could be other things, technically, so the player just says "AC-3" on it instead of Dolby Digital. This way the price of the player barely changed and only the people actually watching things in 5.1 would pay for it, by way of Dolby fees on the discs and the demodulator chips in the receivers and demods.
* In the same way, the SPDIF/TOSLINK on an LD player is always playing the Digital tracks, as long as they are there on the disc. The Analog outs can either player the Analog tracks or play a DAC-ed version of the Digital track. Most of us here have three separate signals going from our players to our receiver. |
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| samaron |
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Posted: 09 Aug 2017, 23:04
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If the disc has an AC-3 track, then the player should output the AC-3RF signal automatically. All you have to do is connect the AC-3RF output from the player to the input on the demodulator, and then from the demodulator output to an input on your AVR. You might have to select the input manually on the AVR that the demodulator is connected to. Also, remember to power on the demodulator unit. The demodulator you have does not have a power light, so make sure you actually pushed in the power button.
Also, Japan uses 100 volt, not 120 volt like USA. Many power transformers are made to be 110 or 115 volt since it is a happy mid-point. Either way, it shouldn't matter in this case. |
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| admin |
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Posted: 10 Aug 2017, 06:26
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1. Manual doesn't state how to use the AC-3 option via remote or actual unit?
2. When selecting the right analog track, the on screen displays states ' analog stereo - 1/L only when analog 2/R is selected.
3. All the above is connected to my Yamaha RX-V765 amp and still no sound?
4. Yamaha APD-1 de modulator light does not light up!
Everybody quickly jumped to the rescue but let me summarize:
No remote for the APD-1, just power it up and connect the "AC3RF out" of your player to the "AC3RF in" of the APD-1.
The moment an AC3RF signal is detected, the "DEMODULATE" led will lit on like this:
http://www.laserdiscarchive.co.uk/laserdisc_archive/yamaha/Yamaha_ADP-1_AC3_Demodulator/YAMAHA_ADP-1_AC3_DEMODULATOR.jpg
Then if you plug either via Coax or Toslink to your A/V Amp, it will detect an Dolby Digital signal and process it normally.
No need to select any specific sound channel on your player.
Julien |
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| signofzeta |
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Posted: 17 Aug 2017, 01:02
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Don't you have a meter or something? There are less expensive ways of getting something to work than continued expenditure of money. There are probably mutiple pepple on your street with some means to verify that your main supply is good. Check for 100VAC, once you know you have it, stop messing with that part of the mystery.
Did you power this with 220VAC at any point? If you did, something probably popped. It might not be that difficult to fix.
Btw, it could be a problem at my end but the image of the PCB you show is very low res. A good pic might help. |
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| rein-o |
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Posted: 17 Aug 2017, 03:11
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I don't own one of these but that fuse clip is only one side, if there were another side you would be connecting a fuse.
So now you have 2 power converters and still not working, I would check as zeta says that you are receiving the power inside the unit.
You can check this out with a multi meter, I'm sure you can even take both to where you bought the maplin and they will test it if you say their unit is faulty.
And as zeta asked, did you by chance accidentally plug this into your amp or something??? that could have popped something inside??? |
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| takeshi666 |
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Posted: 13 Aug 2019, 19:27
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heed1969 wrote: 1. Does PAL spin at a higher rate?
I think PAL spins a little lower - 1500 RPM as opposed to the 1800 RPM on NTSC?
You also need to consider the fact that it can still play NTSC discs so it doesn't seem likely there's anything wrong with the laser itself. |
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| signofzeta |
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Posted: 13 Aug 2019, 23:27
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Yeah, it would be a slower speed because it’s for 50hz countries.
There may be separate adjustments for PAL and NTSC discs and as soon as I typed that I began wondering how it even knows the difference...it has to do some kind of check on the signal right? It’s not something in the TOC, is it? |
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| takeshi666 |
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Posted: 14 Aug 2019, 00:42
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| The best guess I can make without knowing the internal workings of the player is that if it uses a separate circuit for PAL discs, that circuit has been damaged in some way. We have a service manual here: https://manuals.lddb.com/LD_Players/Pio ... /CLD-D515/ but hell if I understand any of that. |
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