What Causes a Bad DVD Drive?

[CGetchCCU]

I am not talking about the laser or motors going bad, I am talking about the board itself.

Bad boards can cause a Xbox to frag. Sometimes a drive will cause the Xbox to no longer quickboot XBlast chip. Which components on the board can cause these issues?

I know that a new and better method to fix Gamecube drives are to replace the capacitors over touching the pot. Is there anything that can be repaired on a bad board on one of the Xbox drives?

[Marty]

Voltage regulators, optocouplers, NAND/logic gate....

It's almost never the capacitors on DVD drives.

[ChriZz]

I often had the problem with Samsung drives that the resistors became high impedance. But never a defective laser. Of around 20 Samsungs that I repaired, 18 had exactly this problem.

[Bowlsnapper]

9 hours ago, ChriZz said:

I often had the problem with Samsung drives that the resistors became high impedance. But never a defective laser. Of around 20 Samsungs that I repaired, 18 had exactly this problem.

Which resistors are they, typically, and what values SHOULD they have, versus WHAT they have when they're been bad?

[SS_Dave]

2 hours ago, Bowlsnapper said:

Which resistors are they, typically, and what values SHOULD they have, versus WHAT they have when they're been bad?

In the red box.

On this board there is 6 banks of resistors and each bank has 4 resistors that are 330 ohm each and it could be just one of the resistors has gone open circuit.

The capacitors in blue are also stating to fail and I have replaced heaps of that type in other electronics that have leaked.

 

Cheers

SS Dave

Soft modding is like masturbating, It gets the job done but it's nothing like the real thing.

 

[CGetchCCU]

I've also noticed one of my drives (Hitachi) does not do quickboot when used on my Xblast chip. Is there a reason for this? The drive works fine otherwise. 

[ChriZz]

The resistance networks (NR 601 - NR 604) have 33 ohms, one or two become high-resistance over time...several kilo ohms to even mega ohms were the case with my Samsung DVDs. The other networks with 82 ohms have so far been unremarkable. Unfortunately I don't know why this happens. Poor component quality or overuse, who knows. I always got error code 12 and sometimes also HDD timeout errors and funny transfer errors. It took me a long time to find out what the cause was. But as I said, all of the ones I've had in my hands have exactly these failures. There were a few outliers where only the switch for “tray in” had bad contact. Ss_Dave was faster. You can see exactly where the components are located in his picture. At the beginning I simply bridged the defective parts with a normal resistor... I didn't have anything else and I needed to be sure that it was just this component... so that works too

[Bowlsnapper]

11 hours ago, ChriZz said:

The resistance networks (NR 601 - NR 604) have 33 ohms, one or two become high-resistance over time...several kilo ohms to even mega ohms were the case with my Samsung DVDs. The other networks with 82 ohms have so far been unremarkable. Unfortunately I don't know why this happens. Poor component quality or overuse, who knows. I always got error code 12 and sometimes also HDD timeout errors and funny transfer errors. It took me a long time to find out what the cause was. But as I said, all of the ones I've had in my hands have exactly these failures. There were a few outliers where only the switch for “tray in” had bad contact. Ss_Dave was faster. You can see exactly where the components are located in his picture. At the beginning I simply bridged the defective parts with a normal resistor... I didn't have anything else and I needed to be sure that it was just this component... so that works too

Normal as in not an SMD? Which value did you end up using that was sufficient?

[lilkuz2005]

I just swapped out a Samsung drive for a Hitachi, the Samsung drive would read discs without issues but in xbmc4gamers system information it would not show the drive model, it just said busy, not sure what caused that issue.

[ChriZz]

9 hours ago, Bowlsnapper said:

Normal wie kein SMD? Welchen Wert haben Sie am Ende verwendet, der ausreichend war?

https://de.farnell.com/panasonic/exbv8v330jv/widerstandsarray-konkav-0603x4/dp/2060153

 

That one should have been it. But please don't pin me on it. I don't have one on hand to measure because of the component size. As long as the value is right you can actually solder anything. I used normal carbon layer resistors as a test.

@lilkuz2005 Test the resistors, maybe you're lucky and it's defective right there. 

[Bowlsnapper]

On 9/14/2023 at 11:14 AM, ChriZz said:

https://de.farnell.com/panasonic/exbv8v330jv/widerstandsarray-konkav-0603x4/dp/2060153

 

That one should have been it. But please don't pin me on it. I don't have one on hand to measure because of the component size. As long as the value is right you can actually solder anything. I used normal carbon layer resistors as a test.

@lilkuz2005 Test the resistors, maybe you're lucky and it's defective right there. 

I rememebr that fuckin hting. They're around the RAM modules. Think I fried one once.