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well i've managed to get hold of those heat pads and screws from a shop here. gonna try it out later. will keep u guys updated. hopefully this will solve my multi disc prob;lesm
by the wires, would too thin a wire used have any problems playin multi-disc games on the messiah2? are my wires too thin?
The BA6664FM is a 3-phase motor controller.
Used to control the PS2 disk spindle motor, manfu. is Rohm and datasheets are available for both BA devices.
What symptoms would you experience if either of those chips were faulty?
I seen the 6664 datasheet on chipdocs but they require you to register/pay for access to the site - I did'nt bother, but I should be able to get the datasheets at work.
Rohm appear to have moved onto the 6665 I'm not sure how compatible the two devices are until I see the 6664 datasheet.
Does anyone know if there is a way to test the chip?
A way to check if the BA5815 chip has gone is to look on top of the chip and find the dimple on top of it, that dimple denotes that pin on the chip is pin 1 and so count till you get to pin 8 on the chip (it will be the 1 after the long flat heatsink pin) which is linked directly to the fuse (PS11).
Being that fuses protect the live side of things on the board this pin shouldnt be earthing to ground so take a multimeter select the 'continuity' reading on it and place one of the probes on pin 8 and the other to ground on the board, if the meter shows continuity or beeps meaning continuity then the chip has shorted.
You can purchase a new BA5815 chip but the BA6664FM are much harder to find.
This was a previous post from the PS2Meister,helped me!
Last edited by E Zee; 03-01-2003 at 05:36 PM.