LG DLX3570W Dryer — Common Problems & What Parts Fix Them
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Understanding the Problem
The LG DLX3570W is a front‑loading electric dryer that commonly shows a few repeat symptoms as it ages: no heat/long drying times, the drum won't turn, noisy operation (squeaks or thumps), or it won't start. Below are practical diagnostic steps and repair actions ranked from easiest/most likely to check first to more advanced components to test and replace. 1) Tools & prep - Tools: multimeter, nut driver or screwdriver set, socket set, needle‑nose pliers, putty knife (for top panel), work light, vacuum or compressed air. - Safety: disconnect power at the breaker or unplug dryer. For gas models also shut off gas. Let the dryer cool if recently used. 2) If the dryer is not heating or clothes take a very long time to dry - Check the vent and lint screen: remove lint screen and inspect/clean. Disconnect the duct from the back and inspect/clean the vent path and exterior hood — restricted airflow is the most common cause of long dry times. - Test the thermal fuse: locate (typically on the blower housing or near the heating chamber). Remove and test continuity with a multimeter — if open, replace the thermal fuse. Note: thermal fuse typically blows when lint/venting causes overheating. - Check the heating element assembly: visually inspect for broken coils and test continuity across the element with a multimeter. Replace if open or visibly damaged. - Test thermostats/thermal cutouts: measure continuity at operating temperature or inspect for burn marks; replace failed thermostats or high‑limit cutouts. - Verify incoming voltage (electric dryers): ensure the dryer is getting proper 240V (two hot legs). A missing leg can let the drum and timer run but prevent heating. How to fix: clean the vent and screen first. Replace the thermal fuse and/or heating element if they test open. Replace faulty thermostats and confirm correct incoming voltage. After replacing parts, run an empty heat cycle and measure outlet air temperature to confirm proper operation. 3) If the drum does not turn or the dryer hums but won’t tumble - Inspect the drive belt: unplug dryer, remove front panel or access panel to view the drum. If belt is broken, obviously replace it. Check belt for wear or glazing. - Check the motor: if belt is intact but motor hums and does not start, test motor windings for continuity and check for a seized motor (manually trying to turn shaft — do this with power off). Replace motor if seized or windings open. - Inspect idler pulley and drum rollers/bearings: worn rollers or seized idler pulley will prevent the drum from turning or make it hard to start. Replace worn rollers/ pulley. How to fix: Replace the belt if broken (note routing) and replace worn idler pulley and rollers as needed. If motor is faulty, replace motor assembly with the correct OEM part. 4) If the dryer is noisy (squeaking, thumping) - Check drum support rollers and shaft bearings: worn rollers create squeaks and thumps; replace the set if worn. - Inspect glides/slides and rear drum bearing: replace worn felt glides or rear bearing as required. - Check idler pulley and motor bearings: replace pulley or motor if noisy. How to fix: Replace worn rollers, glides, idler pulley or motor. Lubrication is not generally recommended — replacement is preferred for long‑term fix. 5) If the dryer won’t start, has no lights or control display issues - Verify power at the outlet and the home breaker/fuse. For electric dryers confirm both hot legs are present. - Test door switch: dryer often won’t start if the door switch is faulty. Test for continuity when the door is closed; replace if open. - Test start switch and drive motor circuit: if start switch is bad it will not send power to the motor or control board. Replace defective switches. - Inspect control board / touch panel: look for burn marks or obvious damage; test other easier components first before replacing the board. How to fix: Replace the door switch, start switch or control board based on testing. Reset power for a control reboot and clear any error codes before re‑testing. 6) Error codes and sensors - If the dryer displays error codes, consult the service manual for that code meaning. Common codes point to moisture sensors, thermistors or control errors. Use a multimeter to test sensor continuity. Safety note: always disconnect power before opening the dryer. Wear gloves when handling sharp sheet metal. If you’re uncertain about live electrical testing or gas connections, call a licensed technician.
Common Symptoms
No heat or long drying times; drum won’t turn; loud squeaks or thumps during operation; dryer won’t start; control/display error codes.
Common Causes
- Clogged or restricted venting / lint screen causing overheating and long dry times
- Failed thermal fuse, heating element, or high‑limit thermostat
- Broken drive belt, seized motor, or worn drum rollers/idler pulley
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
For no‑heat problems, check and clean the vent and lint trap first (fastest fix). Then test the thermal fuse for continuity — it’s inexpensive and commonly fails; replacing it often restores heat.
Frequently Asked Questions
Where do I find the model and serial tag on my LG DLX3570W?
The model/serial tag is usually inside the dryer door opening (on the door frame) or on the back panel. If you can’t find it there, remove the top or back panel and look on the cabinet. Use that exact model/serial when ordering parts so replacements match your dryer variant.
Can I replace parts myself or should I call a technician?
Many repairs are DIY‑friendly: cleaning vents, replacing thermal fuses, belts, rollers, door switches and lint filters. Use basic tools and follow the step‑by‑step safety instructions above. For gas valve components, complex electrical diagnostics, or if you’re uncomfortable working with mains electricity, call a licensed appliance technician.
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