Lite on IHAS 124B NEX 2mb flash. Chip is MEDIATEK MT1839LN
Does not read discs properly and makes errors when burning.
Burned disks have majority of data correct but does not pass verification and disc’s are very poorly readable on other drives.
Things i have tried:
Software side: Flashing, crossflashing, restoring eeprom. Allso tried to read eeprom and flash from working drive and flashing it to this faulty one. After flashing i get “invalid checksum” error when tryign to convert drive.
Hardware side: Replaced the motherboard to another IHAS 124b drive (new laser and mechanics) Still exactly the same symptoms. Used the orther drives MB in faulty drive and it burns and verifies perfectly so its not hardware or mechanical issue.
What suggestions do you have for me? Has this kind of issue been seen before where the fault lies in the MB? What are the components that might be making the MB to behave like this?
I am capable of desoldering and resoldering MEDIATEK chipset from the motherboard. Should i try to remove and replace it with the working drive’s Chipset?
Any ideas are welcome.
Faulty drive is missing this thing: i do not know what its for but it does not seem to be very important because i have successful burns and reads with that thing missing after i switched pcb’s.