LDT7797ST
LG LDT7797ST Dishwasher Service
Most common issues on this model
- LED tub light and its wiring
- App connection through SmartThinQ
- Third rack height and rails
- Spray arm movement and filter
The LDT7797ST is an older top control LG dishwasher. It combines QuadWash, SmartThinQ, an LED tub light, a height-adjustable third rack and 44 dB LoDecibel operation, which makes it a fairly feature-rich unit for its time.
The tub light is a small detail that still matters: it shows the load at a glance, and a dark light can mean a loose connector, a bad switch or a failed lamp. The third rack can be raised or lowered, and its slides take the most wear. We test both before turning to the wash.
If the app has stopped reporting, we check the Wi-Fi before the dishwasher. We read the model and serial from the label and give a written price before any part is ordered.
Key features
- Top control dishwasher
- QuadWash system
- SmartThinQ technology
- Noise figure of 44 dB
- LED tub light
- Height-adjustable 3rd rack
Error codes this model can show
Why is my tub light off?
The lamp, its wiring or the door switch may be the cause. We test them in that order. A lamp is cheap, but a failing switch or wire behind it is worth finding before it spreads.
Can the third rack on the LDT7797ST be moved?
The listing calls it height-adjustable. If it will not move or sticks, we look at the slides, clips and wheels. Slides and clips take the most strain, and replacing a worn pair costs less than a new rack.
Is the LDT7797ST still repairable?
Yes. It is an older model, and we service it with a 30-day workmanship warranty and a written price first. Parts are matched to the label, and the price is explained before we order anything.
Book repair for your LDT7797ST
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.