Member Avatar for owenbear

Hiya all,

I've just got my hands on a Jeantech PSU.
It's not in the box and has no insttuctions so I hope someone can help.

There's a 3 position switch just below the on/off button labelled HAL.

Can anyone tell me which setting I should have it on?

Maybe I should add I'm from England which runs 240V.

Thanks,

OwenBear.

  • 2 Contributors
  • 2 Replies
  • 271 Views
  • 1 Day Discussion Span
  • Latest Post Latest Post by owenbear

Dani AI

Generated

Short answer: the three-position HAL switch is a fan / thermal-management selector, not the mains-voltage selector. H = High (full fan), A = Auto (fan speed controlled by internal temperature — recommended for normal use), L = Low (quiet/low-speed). This matches the manufacturer-style description used on Arctic/Jeantech-branded PSUs. (techist.com)

Important voltage note: the input mains setting is separate. Some older PSUs have a manual 115/230 (or 110/230) slider that must be set to 230 for UK mains; many modern ATX units are full-range (100–240 VAC) and need no change. Check the AC-input marking on the label — if it says 100–240VAC leave it alone; if it shows a 115/230 selector, set it to 230 before powering the unit. (newegg.com)

Safe procedure and quick checks:

  • Always disconnect mains power before flipping any voltage selector or opening the case. (manualzilla.com)
  • If the HAL switch is present, leave it on A (Auto) for everyday UK use; switch to H only when sustained maximum cooling is required, or L for very low-noise/low-load situations. (techist.com)
  • If the PSU does not start after any switch changes, restore the original switch positions, recheck the mains-voltage selector/cable/fuse, and consult the PSU model manual.

Tying back: ’s link pointed in the right direction (the HAL control is not the input-voltage switch). Note the label/model number on the Jeantech unit and search the manufacturer manual before making changes; if there is any doubt about the input selector or the unit’s history, treat the PSU as suspect and replace it rather than risk damage.

Recommended Answers

All 2 Replies

Member Avatar for jingda

See for more info.

Edited by jingda because: n/a
Member Avatar for owenbear

Thanks for the info.

OwenBear

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.