LG F1480RD Issue - Clicking relay
Hi there,
I have the above washer/dryer that has recently packed up after showing some Power failure (PF) warnings.
The washing machine died and I removed the main board and found a blow transistor, so I have fitted a new Main PCB and now a Relay on the PCB just clicks constnatlly. Any ideas on what might need doing next? could the controller board affect it?
I have had a good search on the forums, and not had much luck finding an answer.
Thanks for your help!
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
LG F1480RD relay clicking after main PCB replacement
- The problem
- LG F1480RD washer/dryer had previously shown PF warnings, then failed completely. The main board was removed and a blown transistor was found. After fitting a replacement main PCB, a relay on the PCB clicked continuously and the machine still was not working.
- Likely cause
- The accepted reply suggests the PCB fault may only be part of the problem. The underlying cause of the blown transistor was not identified, and another fault elsewhere in the machine or an undetected board fault was considered possible. A motor fault or power surge was mentioned only as possibilities, not confirmed causes.
- What fixed it
- No definite repair was confirmed. The accepted advice was to investigate what caused the transistor to fail rather than only replacing the PCB, and to have the board professionally tested to identify any remaining or underlying fault.
- Checks to try
- PF warnings reported before failure
- Main board removed and a blown transistor found
- Replacement main PCB fitted
- Relay on the PCB clicks constantly after replacement
- Parts or tools mentioned
- main PCB
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
Hello there. If you found a blown transistor and replaced it you may have only fixed a part of the problem. What caused the transistor to blow in the first place? And also was anything else blown that you haven't detected? Those are the questions that spring to mind. As white goods engineers are never trained in electronic I have very little knowledge of transistors and capacitors etc and certainly not repairing PCBs. The white goods industry is always just replaced PCBs and never repaired them. Very wasteful I know but that's how it's always been. The only thing I can suggest is that you maybe send the board for testing at somewhere like QER and ask them what is likely to blow that particular transistor. I would be wanting to know is it something that just can happen, is it a power surge, or could it be another component such as the motor in the washing machine that has blown it?
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