Btw, if the number D105 is non-existent in the schematics, try to determine which part could be the diode, going from the power input socket, fuse and then the diode. The diode should be very close to the fuse. Good luck!
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| [DVL-919] Power problems https://forum.lddb.com/viewtopic.php?f=55&t=5789 |
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| Author: | Guest [ 16 Nov 2015, 22:16 ] |
| Post subject: | [DVL-919] Power problems |
Hello, i just bought a Pioneer DVL-919. This model have automatic voltage select. But its compleatly dead. Many people is talking about a problem in D105, but this dont have it in the schematic. When i took it apart i found that the power button ASSY had 2 burnt solderings. I also found a blue capacitor loose in the player that i think was attached to that one. Ive tried to put it back but still nothing. I have pictures but i couldnt upload them for some reason, i appriciate any help i can get. Thanks |
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| Author: | laserpaal [ 16 Nov 2015, 23:56 ] |
| Post subject: | Re: DVL-919 Power problems |
Those blue capacitors are located on the psu board if I recall correctly? Re-solder those burnt solder joints if you are feeling comfortable using a solder iron. Replace the fuse with the same ratings if it is broken. If the player still refuses to power on, clip one of the leads on the D105 surge protector. If it now works, then you have found the problem. Be sure to replace this part to prevent a critical surge in the future, leaving the player toasted. This diode of some kind is a weak component construction and a common problem, as far as I have been told. |
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| Author: | laserpaal [ 17 Nov 2015, 00:03 ] |
| Post subject: | Re: DVL-919 Power problems |
Btw, if the number D105 is non-existent in the schematics, try to determine which part could be the diode, going from the power input socket, fuse and then the diode. The diode should be very close to the fuse. Good luck!
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| Author: | Guest [ 17 Nov 2015, 19:42 ] |
| Post subject: | Re: DVL-919 Power problems |
This is the power button board where i found the blown solderings at the top Attachment: pic1.jpg [ 119.29 KiB | Viewed 5338 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:43 ] |
| Post subject: | Re: DVL-919 Power problems |
This is the capacitator i think whas attached to that one Attachment: pic2.jpg [ 110.44 KiB | Viewed 5338 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:45 ] |
| Post subject: | Re: DVL-919 Power problems |
This is the powerboard in full Attachment: pic3.jpg [ 115.8 KiB | Viewed 5338 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:46 ] |
| Post subject: | Re: DVL-919 Power problems |
Schematics for power button assy Attachment: 20151117_192522.jpg [ 120.53 KiB | Viewed 5338 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:49 ] |
| Post subject: | Re: DVL-919 Power problems |
Im looking for that diode youre talking about, But doesnt really know which one youre refering to. So iam posting some more pictures of schematic close to the Fuse. Attachment: 20151117_192554.jpg [ 146.39 KiB | Viewed 5338 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:51 ] |
| Post subject: | Re: DVL-919 Power problems  |
picture of the fuse + sourroundings Attachment: 20151117_192301.jpg [ 146.07 KiB | Viewed 5337 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:52 ] |
| Post subject: | Re: DVL-919 Power problems |
another pic of diodes Attachment: 20151117_192310.jpg [ 145.94 KiB | Viewed 5337 times ] |
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| Author: | Guest [ 17 Nov 2015, 19:55 ] |
| Post subject: | Re: DVL-919 Power problems |
I also found this. 2 capacitors i cant see any crack at the top but orange goo, looks like they gone bad? Attachment: 20151117_192252.jpg [ 147.56 KiB | Viewed 5337 times ] |
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| Author: | krbahr [ 18 Nov 2015, 22:27 ] |
| Post subject: | Re: DVL-919 Power problems |
I'm trying to remember but the import or non US models may not have the diode. What you removed is an AC Filter, not the problem. I'd check and see if the diode bridge is bad. You may have to just get out the door and meter and debug it. |
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| Author: | publius [ 19 Nov 2015, 23:46 ] |
| Post subject: | Re: DVL-919 Power problems |
Although I can't read the text on it from your photo, I think that blown-off component is not a capacitor, but a Metal Oxide Varistor surge-protection component. Replace it with the exact same component. Undoubtedly this unit went through a large surge. |
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| Author: | Guest [ 22 Nov 2015, 11:30 ] |
| Post subject: | Re: DVL-919 Power problems |
Ok, i will try to replace them both. Ive checked the diodes all around the board and some of them seems to be faulty. One of them is is D103. Since its automatic voltage should i test it with american voltage for less chance of surge problem? |
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