Reported branch
A board had helped other T1 cases
Those experiences keep board output relevant, but they do not make it a guaranteed repair.
Diagnostic comparison · LG T1
The Same T1 Code Did Not Produce the Same Repair
Two technicians had seen a board resolve T1. Another case stayed unchanged after a board and terminator, with a clean duct — making a wiring short the next meaningful branch.
The disagreement is useful diagnostic evidence
The shared symptom was T1 with a drum that would not start. Two technicians reported prior cases in which a control board helped. A separate dryer received a board and terminator with no improvement; its duct was reported clean and brand support did not identify another cause. Technicians then pointed to known harness-short repairs.
The source does not identify which branch applied to the active machine, so this page preserves the decision split instead of naming one universal failed part.
A similar symptom can have a different cause on another appliance or model.
Use the failed replacements to change the order of testing
Counterexample
Board and terminator did not help one dryer
The unchanged symptom ruled out repeating the same parts path on that machine.
Next branch
Harness shorts were raised as a known cause
The wiring path became especially important after parts replacement failed and the duct was clear.
T1 requires separating control failure from a shorted harness
The discussion supports at least two real branches. A board can resolve some T1 complaints, but an unchanged code after board and terminator replacement should redirect testing to the wiring harness and short-circuit path.
No frequency ranking or completed repair for the active dryer can be inferred from this small discussion.
Map what was replaced, then test the untouched circuit
Document the exact model, installed board revision, terminator, duct condition and when T1 appears. A technician can then inspect the harness for model-specific pinch, rub or short locations before another control is ordered. If the dryer is in Orange County, you can compare T1 with the LG dryer error-code guide for Orange County before scheduling service; the exact model and failed-replacement history still matter.
Cases closest to this diagnosis
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Electrical and fire safety: disconnect power and stop using a dryer suspected of a wiring short. Do not bypass a terminator or probe an energized harness.
A repair that did not follow the obvious path
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