Samsung eco washer's gone crazed - Page 1
Forum section: electronics / repair

author: marhuum
author_rank: Contributor
timestamp: September 07, 2025, 06:45:18 pm
content: This Samsung eco-bubble front-load washing machine has been going out of control for around 9 months since very beginning of issueThe starting issue is Power switch cannot or very rarely works, so if it's being ON cannot or very hardly can get shut down and vice versaBut after it's been replaced and worked normally the elect. control problems else proliferated up to now; the eco-bubble feature keep being ON, ie. activated (recognized, confirmed by its noisy sound) no matter on what condition it's being,EDITED:even worse further, now if the washer being turned OFF, so it would get off presumably mainly indicated by its control panel goes off, but then the washer eco-bubble keep being ON and keeps sounding its noise !Only after it's disconnected to power, here the stabilizer PS is turned OFF (might be same to getting unplugged) then the washer would get shutdownThis's ~17 years old product so still the non-inverter type washer but has had smartphone/Android remote connecting feature(Cont. OP:)So one has gone through such issue or know what actually the faulty mechanism is out of the correct, normal working one, so to sincerely share it and help me out ?Thanks in advance

author: UnijunctionTransistor
author_rank: Frequent Contributor
timestamp: September 07, 2025, 06:57:51 pm
content: Check Your Model Number: Many of these issues are model-specific. Search online for your exact model number and failure mode(e.g., "XYZ123** model front panel problem") to see if it's part of a known issue or warranty extension.You may not be alone in your problem, and there may be already a remedy, technical or legal, which addresses the problems that you have been experiencing.

author: marhuum
author_rank: Contributor
timestamp: September 08, 2025, 03:27:05 am
content: the PCB barcode label has mark code on top;DC92-01628D 8U-02 (210,000)ask a AI bot;The eco-bubble subsystem is being energized continuously either because the control PCB’s switching component TRIAC/relay failed closed, or the EEPROM or a firmware logic is corrupted/locked to always ON

author: elektryk
author_rank: Regular Contributor
timestamp: September 08, 2025, 06:11:26 am
content: Such washing machine modules are (in)famous for cold solder joints...

author: Haenk
author_rank: Super Contributor
timestamp: September 08, 2025, 06:26:09 am
content: 17 years is IMHO a surprisingly long lifetime for a Samsung product and/or a washing mashine.IMHO it is impossible to remotely diagnose the problem, could be anything. I would start looking into the power supply and the caps, checking for cold solder joints too, check for hanging relais, maybe also check for burnt components/PCB darkening.

author: UnijunctionTransistor
author_rank: Frequent Contributor
timestamp: September 08, 2025, 10:33:20 pm
content: Quote from: marhuum on September 08, 2025, 03:27:05 amAs I had mentioned previously;Search online with this information for known issues.But a 17 year old appliance most likely has reached its wearout phase.

author: JOSDHO
author_rank: Contributor
timestamp: September 09, 2025, 07:53:30 am
content: It sounds like the issue might be with the power control circuit or the eco-bubble module itself. Since the power switch is behaving erratically, it could be a faulty switch or an issue with the control board that's affecting the power on/off functionality.The eco-bubble feature staying active even when the machine is turned off suggests that the control board is not properly shutting down, which could be caused by a malfunctioning relay or a stuck signal from the board to the eco-bubble module. Another possibility is that the power supply board, especially the stabilizer (PS), might not be providing a clean shutdown signal, leaving the module active.Given the age of the machine (around 17 years), it's possible that components on the control board have worn out over time, leading to this kind of erratic behavior. You might want to start by checking the power switch and control board connections, and if possible, inspect the eco-bubble module for any signs of failure.It may also be worth checking the firmware or any software-related issues, since the model has smartphone/Android remote control capabilities. A reset or update to the firmware could also help if there's a software glitch.

author: Bemused2020
author_rank: Newbie
timestamp: September 09, 2025, 08:49:14 am
content: ... Sounds like the types of 'programmed redundancy' faults induced by heat cycling of solder joints and allowing the control board etc to be exposed to long term humidity.... Check for bad capacitors, bad solder joints, corroded / contaminated contacts and tracks.... If the manufacturer is really clever, the fault will have permanently damaged a component so that a simple clean and resolder wont fix it.... Although it's extremely annoying, you can't really blame domestic manufacturers from wanting to sell a new machine to you every 15 years. If the machine lasted 30 + years the manufacturer would go bankrupt from lack of sales.... Treat it as a challenge... I do.

author: marhuum
author_rank: Contributor
timestamp: October 01, 2025, 12:24:27 pm
content: can't believe how ignorant I'msimply opening the tube outlet hose to clean up every inside (there've been few blocking pieces there) then most the troublesome one by one goes awayBut remains- the drain pump motor not spinning when it should do so ie. when exiting from the wash or rinse phase so it'd stuck/loop doing so at that point of time- the eco-bubble and water feeder/control get tangled to each other; as the water feeder being working (ON) then it'll trigger the eco-bubble thence is being working (ON) too simultaneously, and as the eco-bubble is being working (ON) then it'll trigger the water feeder to work, so while washing in eco-bubble mode ON would have the water keeps on flowing from inlet into tubeAny experienced one know exactly whu drain motor not performing its job ?

author: Seekonk
author_rank: Super Contributor
timestamp: October 01, 2025, 04:19:53 pm
content: You've gone 17 years without replacing at least two pumps! Pump motors are simple two pole pumps which can start in either direction. Impeller is not directly connected. There is a mechanism which allows 120 degrees of rotation before impeller is enabled. When these lock up it will not pump. Motor will spin if no liquid is present, just can't spin with liquid. Liquid level sensor shuts down machine.I have a LG that shut down with a bad temp sensor. I just replaced mine with a resistor since heat function is not used.Bought a beautiful non working 2 year old LG a guy wanted $200 for. It had been in storage most of the time, sale sticker was still on cabinet. I offered $150 for it and he took it before I even finished the sentence. He even delivered. Evidently he has stored something on top of it and one of the buttons stuck in. Micro couldn't get past that in the scan. Couple swipes of a small file fixed that.Appliences now are a whole new world.