2PAC Mafia
Member
Hi guys,
I´m trying to repair this unit. It´s monitoring marine display and when it switches on it shows only white screen (back light on) but no graphics.
There are some boards inside but I would say there is a problem at embedded computer, which is a iBase IB881-R. I have seen I have 12V power coming into the board but no power output to the LCD. I´ve seen a power line is missing at a regulator 1117 and SMPS inside are not working. This board is obsolete so I´m trying to find it at some store or repair it.
I have a doubt, at manual is speaking about a connector J21 at page 22 from the manual. It´s about PSon signal. I don´t know if that is a switch on signal into the IB881-R, so should I need ground at pin 4 to start the computer?
Can I work with power without heat sink just to follow power lines? It has a big heat sink but at solder side is not possible to work with heat sink.
I leave you the information here:
http://www.restoretronic.com/descargas/Man Boning/IB881-R.jpg
http://www.restoretronic.com/descargas/Man Boning/IB881-R.pdf
http://www.restoretronic.com/descargas/Man Boning/IB88110a.pdf
http://www.restoretronic.com/descargas/Man Boning/AHD_1015TC_MTC_EN.pdf
I´m trying to repair this unit. It´s monitoring marine display and when it switches on it shows only white screen (back light on) but no graphics.
There are some boards inside but I would say there is a problem at embedded computer, which is a iBase IB881-R. I have seen I have 12V power coming into the board but no power output to the LCD. I´ve seen a power line is missing at a regulator 1117 and SMPS inside are not working. This board is obsolete so I´m trying to find it at some store or repair it.
I have a doubt, at manual is speaking about a connector J21 at page 22 from the manual. It´s about PSon signal. I don´t know if that is a switch on signal into the IB881-R, so should I need ground at pin 4 to start the computer?
Can I work with power without heat sink just to follow power lines? It has a big heat sink but at solder side is not possible to work with heat sink.
I leave you the information here:
http://www.restoretronic.com/descargas/Man Boning/IB881-R.jpg
http://www.restoretronic.com/descargas/Man Boning/IB881-R.pdf
http://www.restoretronic.com/descargas/Man Boning/IB88110a.pdf
http://www.restoretronic.com/descargas/Man Boning/AHD_1015TC_MTC_EN.pdf