Uploaded December 2025 | Updated September 2026, 2 weeks ago
This technical deep-dive reveals the critical electrical check performed on the Epson 1390 CSIC board, showing exactly how a short circuit across pins one and two can lead to the immediate destruction of the mainboard and fuses. A common symptom like a perpetually lit ink light or constant cartridge error might be the first warning sign before total system failure. The shocking visual evidence uncovers severe burn marks on pins three and four, confirming the extent of the electrical feedback issue. For technicians facing this common tragedy, a genuine override board, such as the one offered by BCH Technologies Lab in Greensboro, North Carolina, is presented as the essential safeguard against this damaging feedback loop.
#Epson1390 #printerrepair #mainboardfix #CSICboard #techteardown #printertroubleshooting #electronicsrepair #inkjetrepair #BCHTechnologies
This technical deep-dive reveals the critical electrical check performed on the Epson 1390 CSIC board, showing exactly how a short circuit across pins one and two can lead to the immediate destruction of the mainboard and fuses. A common symptom like a perpetually lit ink light or constant cartridge error might be the first warning sign before total system failure. The shocking visual evidence uncovers severe burn marks on pins three and four, confirming the extent of the electrical feedback issue. For technicians facing this common tragedy, a genuine override board, such as the one offered by BCH Technologies Lab in Greensboro, North Carolina, is presented as the essential safeguard against this damaging feedback loop.
#Epson1390 #printerrepair #mainboardfix #CSICboard #techteardown #printertroubleshooting #electronicsrepair #inkjetrepair #BCHTechnologies
