I've had a Lenovo IdeaPad S340 since the pandemic and it has generally worked well, but it recently developed power problems and no longer seems to hold a charge. A technician diagnosed the issue as MOSFET PQ311 dumping to ground, which I understand means there may be a fault in the laptop's power circuitry. The repair quote is $200, and I need the laptop for school by next week. Does that sound reasonable, or should I get another estimate?
3 Answers
$200 sounds reasonable if that includes both the diagnosis and the repair. Replacing a MOSFET requires microsoldering, specialized equipment, and experience, so the part itself may be inexpensive while most of the cost comes from the technician’s labor and expertise. Similar repairs often fall in the $180–$200 range. Since you need it soon, ask whether they can have it finished before next week and whether they currently have a backlog.
It may also be worth confirming that the battery itself isn’t the main problem. Compatible replacement batteries can sometimes be found for around $20, although a battery replacement won’t fix a damaged charging circuit or MOSFET. Ask the technician whether the battery was tested before approving the board repair.
The price seems fair, especially if the shop has already spent time tracing the fault. A reasonable diagnostic charge can be around $75–$100, and the remaining amount covers board-level repair work and the equipment needed to do it safely. If the battery is also worn out, ask for a separate quote to replace it while the laptop is already being serviced.
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