orla stage partner problem Keys

[binito]

Dear ,
i have a keyboard Orla stage partner with some Keys no sound.
I found the problem is in main PCB . It have a chip 4032v-75tn-10i with one input bad . I think that i cant change It because is programable PLD .
I no found support of Orla keyboards to buy this PCB , so i dont know solution.

its posible change 4032v-75tn-10i ? I don't know if need load program??
thanks

[Jazz P Bass]

Some CPLDs are programmed using a PAL programmer, but this method becomes inconvenient for devices with hundreds of pins. A second method of programming is to solder the device to its printed circuit board, then feed it with a serial data stream from a personal computer. The CPLD contains a circuit that decodes the data stream and configures the CPLD to perform its specified logic function. Some manufacturers (including Altera and Microsemi) use JTAG to program CPLDs in-circuit from .JAM files.

[Jon Snell]

The mask or programme is the 10i suffix. Very unusual to fail with this 'lattice' IC.
There are many suppliers in China. Here is a trusted supplier that will only deal through fleabay; https://www.ebay.co.uk/itm/2PC-LC403...sAAOSwt8Ze0auW

Don't forget to warm the pcb up to around 100℃ before attempting to desolder the chip. It avoids stressing the board and components around the hot spot.