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FiiO X3 mod - AD8397 to AD8620 - Page 17

post #241 of 250
Quote:
Originally Posted by ClieOS View Post
 

 

Your friend has soldered it in the wrong orientation. The sloped edge should have faced upward (toward the SD slot) in the picture, but it is not. My guess is the chip has likely burnt out, better order a new one and hopefully no other hidden damage that will render the X3 unrepairable.

I've bought the new component (the exact same model) and we've soldered it in the right direction.
Unfortunately, when I play a song and I plug the headphones, I can hear "TAC" sound from the player and then, after maybe 2 seconds, another from the headphones, and it gives me the message: "Output error Please reinsert earphones".
I specify that the music works from the LINE OUT.

post #242 of 250
Quote:
Originally Posted by v4ever16 View Post
 

I've bought the new component (the exact same model) and we've soldered it in the right direction.
Unfortunately, when I play a song and I plug the headphones, I can hear "TAC" sound from the player and then, after maybe 2 seconds, another from the headphones, and it gives me the message: "Output error Please reinsert earphones".
I specify that the music works from the LINE OUT.

I think that the first TAC is the relay.
But I cannot understand the second. Maybe is there some short-circuit?

post #243 of 250
Thread Starter 

There is only one relay inside X3 so what you are hearing is the opening and closing of the same relay. My guess is, there is either no power / signal on of the the channel due to unknown damage to the voltage supply rail (as the headphone-out opamp is only half powered), or your opamp has a cold solder join (less likely). The worst case is there might be some high DC offset (which the relay has protected you from). The opamp buffer on the line-out actually can work with a single supply rail so it might not get affected by the problem on the supply rail. There is no easy way for me to tell which is which though.

post #244 of 250
Quote:
Originally Posted by ClieOS View Post

There is only one relay inside X3 so what you are hearing is the opening and closing of the same relay. My guess is, there is either no power / signal on of the the channel due to unknown damage to the voltage supply rail (as the headphone-out opamp is only half powered), or your opamp has a cold solder join (less likely). The worst case is there might be some high DC offset (which the relay has protected you from). The opamp buffer on the line-out actually can work with a single supply rail so it might not get affected by the problem on the supply rail. There is no easy way for me to tell which is which though.
Many thanks ClieOS.
You have been clear, now I can't do anything else. Now I'm trying to send it to Fiio for a reparation.
post #245 of 250
Quote:
Originally Posted by ClieOS View Post
 

Thanks.

 

There is actually another opamp inside, the AD8692 on the DAC output stage. Upgrading it will further improve headphone-out as well as line-out. I am thinking whether LM4562 will be suitable. But AD8692 is nice enough that I think I will keep it for now, maybe reserves as a future DIY project.

 

Hi ClieOS,

Could you help me to locate this AD8692 opamp?

Thanks,

Benno

post #246 of 250
Thread Starter 
Quote:
Originally Posted by Benno View Post
 

 

Hi ClieOS,

Could you help me to locate this AD8692 opamp?

Thanks,

Benno

 

It is on the front of the PCB, right next to the buttons.

post #247 of 250

 

 

 

 

 

 

 

X3m-04.jpg

!

 

 

Thanks for Clieos, Is this the spot you ment?

I only see the ad8397 here, but i'm looking for the line-out buffer opamp, the ad8692.

 

Sorry for my noobness. I made pictures but i'm not permitted to attach them.

post #248 of 250

^^^  ad8692 is on the other side of the board, (below the press-switches).

 

 

 

 

Thanks to this thread, I now own a X3 and of course, the stock chip has now been replaced (never was very impressed with the 8397 anyway.....). It now sports an AD8599 for headphone-out, the sound is a bit darker and more "emotionally involving", with about enough power for driving my EarSonic SM3's.

 

But neither the 8397 nor the 8599 has enough juice to run my Fostex T50rp.  I think there is enough (barely) room on the board to add a pair of BUF634's next to the AD8599, that should provide some more firepower, hopefully enough to drive the small ortho's.  so....I have a pair of SOIC BUF634 coming :blink:

post #249 of 250
Quote:
Originally Posted by AudioCats View Post
 

^^^  ad8692 is on the other side of the board, (below the press-switches).

 

 

 

 

Thanks to this thread, I now own a X3 and of course, the stock chip has now been replaced (never was very impressed with the 8397 anyway.....). It now sports an AD8599 for headphone-out, the sound is a bit darker and more "emotionally involving", with about enough power for driving my EarSonic SM3's.

 

But neither the 8397 nor the 8599 has enough juice to run my Fostex T50rp.  I think there is enough (barely) room on the board to add a pair of BUF634's next to the AD8599, that should provide some more firepower, hopefully enough to drive the small ortho's.  so....I have a pair of SOIC BUF634 coming :blink:

The x3 at stock will be volt limited into the T50rp 50 ohm load, not current limited. If you need more oomph for your orthos, you'll need an external amp with some voltage gain.

post #250 of 250
Quote:
Originally Posted by AudioCats View Post
 

^^^  ad8692 is on the other side of the board, (below the press-switches).

 

 

 

 

Thanks to this thread, I now own a X3 and of course, the stock chip has now been replaced (never was very impressed with the 8397 anyway.....). It now sports an AD8599 for headphone-out, the sound is a bit darker and more "emotionally involving", with about enough power for driving my EarSonic SM3's.

 

But neither the 8397 nor the 8599 has enough juice to run my Fostex T50rp.  I think there is enough (barely) room on the board to add a pair of BUF634's next to the AD8599, that should provide some more firepower, hopefully enough to drive the small ortho's.  so....I have a pair of SOIC BUF634 coming :blink:

Thanks AudioCats for clarifying this! 

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