I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
Hi,
I just joined after finding this post. I know this is an old post but I have just purchased a second had da vinci 1.0A. with the exact problem originally described. The 3.3V LED is not lit up. After a day of frustration trying to reset the bios for a bios reflash, I started searching and found this post.
As described and testing it appears to be the fuse on the 3.3V rail. I just ordered some of the 0603 K fuse described in the post.
My questions is: Is it possible to use a Resettable fuse instead? Some thing along the lines of http://nz.rs-online.com/web/p/resettabl … s/7874259/
Thanks.
]]>I realize that this is an older post, but it sounds like I'm having the same issue. Can anyone explain a fix? That was a bit over my head.
What exactly is the printer doing
]]>Thanks bud for the quick response I can tell it's gonna be a bugger to change lol think will take it to local shop that deals with surface mount components did you find out how your fuse blew in the first place
Thanks
Kyle
90% of the time they blow because you use the wire brush to clean the head while it is heating. There are exposed wires at the end of the heater and the brush shorts across them.
]]>Hi kev
What problems occured when your r47 blown as my led screen has stopped working and my extruder isnt heating up also r47 is show ing a resistance of 86
Thanks
Kyle
My printer was doing the same thing it sounds like the same problem and as far as replacing that fuse it is a pain its very small you will need a lot of patients there is also a video on YouTube showing how to replace them.
]]>n108bg wrote:carl_m1968 wrote:Sounds correct. Is it possible you touched something else while shorting? Van you measure 3.3 at the power supply coonector marked on the board?
Its possible i touched the SD card holder case, but that is all I can think of
kev0175 wrote:I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
How would i go about testing if i blew this fuse?
Kev,
Your diagnosis was correct. Testing with the cheapest multimeter i could find at Harbor Freight revealed a much higher resistance on R57 (400-600) as compared to R47 (4). Shorting the 3.3v input to the other side of the fuse brought back normal operations.
Thank you for the help, both Kev and Carl.
Glad to be of service, if you are going to replace that fuse you will need a lot of patience its sooooo small
]]>carl_m1968 wrote:n108bg wrote:The pin I shorted was J37, just below the Micro SD slot.
Sounds correct. Is it possible you touched something else while shorting? Van you measure 3.3 at the power supply coonector marked on the board?
Its possible i touched the SD card holder case, but that is all I can think of
kev0175 wrote:I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
How would i go about testing if i blew this fuse?
Kev,
Your diagnosis was correct. Testing with the cheapest multimeter i could find at Harbor Freight revealed a much higher resistance on R57 (400-600) as compared to R47 (4). Shorting the 3.3v input to the other side of the fuse brought back normal operations.
Thank you for the help, both Kev and Carl.
]]>carl_m1968 wrote:n108bg wrote:The pin I shorted was J37, just below the Micro SD slot.
Sounds correct. Is it possible you touched something else while shorting? Van you measure 3.3 at the power supply coonector marked on the board?
Its possible i touched the SD card holder case, but that is all I can think of
kev0175 wrote:I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
How would i go about testing if i blew this fuse?
You can test the ohms with a multimeter or just use a light tester
]]>n108bg wrote:The pin I shorted was J37, just below the Micro SD slot.
Sounds correct. Is it possible you touched something else while shorting? Van you measure 3.3 at the power supply coonector marked on the board?
Its possible i touched the SD card holder case, but that is all I can think of
I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
How would i go about testing if i blew this fuse?
]]>Can you post a picture of the mainboard. The 1.0A is supposed to have a newer board and the erase jumper is in a different location from the 1.0 that uses the older board. It is possible you shorted the wrong jumper and blew the 3.3V rail which also would give you solid bars since the processor will not run without 3.3v.
I believe you blew the K fuse R57, I just replaced my R47 0603 K fuse here is the link:
]]>