Hi guys,
Found many useful threads here for troubleshooting so I thought I would post to see if you can help.
Alpine IDA-X305S stopped playing audio out one day in the car. It's not very old and not often used. Put the factory stereo back in and all speakers work.
I did test with an amp and the RCA outs do have sound. Leads me to believe the internal amp is toast? Reset and verified Power IC is on.
Pacparts does list what could be the amp -- Lv47006P.
Googling, the company discontinued it, so I doubt I could get one. Could not find a datasheet.
Alpine IDAX305S Parts and Accessories Library from Pacparts
I see very few fuses, checked the two I saw and they were ok.
Any other common failure parts I should check?
Found many useful threads here for troubleshooting so I thought I would post to see if you can help.
Alpine IDA-X305S stopped playing audio out one day in the car. It's not very old and not often used. Put the factory stereo back in and all speakers work.
I did test with an amp and the RCA outs do have sound. Leads me to believe the internal amp is toast? Reset and verified Power IC is on.
Pacparts does list what could be the amp -- Lv47006P.
Googling, the company discontinued it, so I doubt I could get one. Could not find a datasheet.
Alpine IDAX305S Parts and Accessories Library from Pacparts
I see very few fuses, checked the two I saw and they were ok.
Any other common failure parts I should check?
Attachments
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Do you read approximately 1/2 of B+ voltage on all of the speaker wires coming out of the head unit?
Hi Perry, thanks for the reply.
I just checked it with audio playing at half volume.
0v DC and ~0V AC on all speaker outputs.
B+ is 12.6v dc.
I just checked it with audio playing at half volume.
0v DC and ~0V AC on all speaker outputs.
B+ is 12.6v dc.
The attached IC is different but appears similar to yours. Using the pin layout of the IC below, do you have 12v on the supply pins?
What is the DC voltage on the standby pin?
What is the DC voltage on the standby pin?
So, in going through and checking the pins I found the problem. Hilariously, almost all of the front row of leads are sheared off (see photo!).
I should have caught this before when I looked over the board.
I have no idea how this happened, other than the deck must have been pushed in on the front or hit by my passenger? I pulled on the back sheet metal frame the chip is mounted to and it moves easily (It mounts with the bolt in the rear heatsink on my car...) kind of a design flaw from Alpine.
Will the TDA7560 drop in as a replacement? I see it's avail on digikey. I measured the package and leads and the dimensions match up.
The one specified by pac parts is discontinued...
Your help has been invaluable thus far!
I should have caught this before when I looked over the board.
I have no idea how this happened, other than the deck must have been pushed in on the front or hit by my passenger? I pulled on the back sheet metal frame the chip is mounted to and it moves easily (It mounts with the bolt in the rear heatsink on my car...) kind of a design flaw from Alpine.
Will the TDA7560 drop in as a replacement? I see it's avail on digikey. I measured the package and leads and the dimensions match up.
The one specified by pac parts is discontinued...
Your help has been invaluable thus far!
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The case style appears to be different. Look up the original part number but go up or down a few numbers to see if you can find something similar. Pin 25 is often the difference. Sometimes it's a high-side drive (used as a remote turn-on). Other times it's a clip indicator or status indicator.
To remove the IC, it's going to be easiest to remove the pins one at a time. To break the body away from the pins, use a razor knife to score them along the body of the IC and then bend at that point until they break.
To remove the IC, it's going to be easiest to remove the pins one at a time. To break the body away from the pins, use a razor knife to score them along the body of the IC and then bend at that point until they break.
I will cut the remaining pins and pull it out to measure further. If the screw holes are slightly different I can make it work. Just need to confirm electrical compatibility.
I'm confident in my soldering skills as long as I can get a replacement. Thanks for the tips, I've also found it is easier to cut off the pins and remove them one at a time from the board to reduce delam risk.
I haven't been able to find the data sheet for the original LV47006P (indicated by pacparts) to see if pin 25 is different. Will pull it out today to check the part numbers on the actual part to see if I can find anything.
Here's possibly one for sale, but $$: Integrato LV 47006P LV47006P | eBay
I'm confident in my soldering skills as long as I can get a replacement. Thanks for the tips, I've also found it is easier to cut off the pins and remove them one at a time from the board to reduce delam risk.
I haven't been able to find the data sheet for the original LV47006P (indicated by pacparts) to see if pin 25 is different. Will pull it out today to check the part numbers on the actual part to see if I can find anything.
Here's possibly one for sale, but $$: Integrato LV 47006P LV47006P | eBay
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I called Pacparts and they said they can get it, even though I see on mouser, etc it's been discontinued. Will try this first since the same exact part would be best case.
Checked data sheets of LV47004P and LV47009P to get an idea of how LV47006P works, I think they are all the same.
Toshiba TB2903HQ and TB2923AHQ appear to have the same pin layout and operation for standby, mute, etc. (Whoops, these also don't seem to be available...)
-However, recommended ratio of AC-Pin is 1:4, whereas the LV4700 series says 1:1.
-Pin 25 short / dc offset also appears to be the same. It can be cut and left open if it causes issues.
Checked data sheets of LV47004P and LV47009P to get an idea of how LV47006P works, I think they are all the same.
Toshiba TB2903HQ and TB2923AHQ appear to have the same pin layout and operation for standby, mute, etc. (Whoops, these also don't seem to be available...)
-However, recommended ratio of AC-Pin is 1:4, whereas the LV4700 series says 1:1.
-Pin 25 short / dc offset also appears to be the same. It can be cut and left open if it causes issues.
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So I received the new LV47006P from pac parts, and installed it yesterday.
Seeing "interrupt" on the display and can't change to any sources, etc. Did not have this problem before installing the new IC.
Leads me to believe somehow the interrupt wire is grounded, but it's sitting on my bench and is not.
Any ideas why it may be stuck in interrupt mode?
Seeing "interrupt" on the display and can't change to any sources, etc. Did not have this problem before installing the new IC.
Leads me to believe somehow the interrupt wire is grounded, but it's sitting on my bench and is not.
Any ideas why it may be stuck in interrupt mode?
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Yes, I tried a press and holding down the reset with both power wires applied (as in, unit is powered but off).
Also tried turning interrupt on/off in the menu.
Tried internal Amp set as on and off in the menu (but this should not matter)
I just thought of something, maybe it needs to have a speaker resistance connected? I do not remember this being the case, but I will try with a speaker connected to confirm.
Also tried turning interrupt on/off in the menu.
Tried internal Amp set as on and off in the menu (but this should not matter)
I just thought of something, maybe it needs to have a speaker resistance connected? I do not remember this being the case, but I will try with a speaker connected to confirm.
Tried holding down reset for a while to no change.
Checked impedance from interrupt to ground and reads k-ohms so it's not shorted somewhere.
Does it need 4 speakers connected? I feel like interrupt would be entirely separate.
Do you know how to disable it entirely? I don't mind removing the option.
Checked impedance from interrupt to ground and reads k-ohms so it's not shorted somewhere.
Does it need 4 speakers connected? I feel like interrupt would be entirely separate.
Do you know how to disable it entirely? I don't mind removing the option.
Wasn't there something in the manual about bluetooth use disabling it?
Many people use preamp only so it shouldn't require having speakers connected.
Many people use preamp only so it shouldn't require having speakers connected.
So I started out by doing a reset by holding down the button with it powered.
Then confirmed the interrupt items are set to default per the manual.
Int mute - on (tried this set as off also)
Int audio - off
Power IC - on
The bluetooth connection instructions say to set Int mute to off. So I tried that also as I mentioned above.
Int mute seems to just disable changing the volume, both settings it still says interrupt and will not let me choose a source.
Checking continuity from the int pin to ground and power shows >>k resistance so there is not a short going on.
I guess I'm stumped aside from removing the chip I installed to see if it still does this ? It won't be easy without damaging it.
Then confirmed the interrupt items are set to default per the manual.
Int mute - on (tried this set as off also)
Int audio - off
Power IC - on
The bluetooth connection instructions say to set Int mute to off. So I tried that also as I mentioned above.
Int mute seems to just disable changing the volume, both settings it still says interrupt and will not let me choose a source.
Checking continuity from the int pin to ground and power shows >>k resistance so there is not a short going on.
I guess I'm stumped aside from removing the chip I installed to see if it still does this ? It won't be easy without damaging it.
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