Side-by-side reliability

Brother MFC-L2820DW vs Brother MFC-L3780CDW

Compare reliability signal, data confidence, common failures, typical age, and reported repair cost. Warranty window reference: 12–12 months depending on category.

Model A

Brother MFC-L2820DW

Reliability signal — · Insufficient data · data confidence Very Low

3 failure reports · Insufficient data · Very Low confidence

Most common failure: Persistent edge toner marks after cartridge replacement
Typical failure age: 1 mo
Median repair cost: —
Highest reported repair: —

Median months

% mfr warranty

100%

After warranty reports

Avg repair cost

—

Top failure categories

Persistent edge toner marks after cartridge replacement1
Recurring early failure requiring multiple warranty exchanges1
Stopped networking and printing after ~1 month1

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Model B

Brother MFC-L3780CDW