JBC CD-1BQF T245 handle buzzing/chattering - Page 1
Forum section: electronics / general

author: L-Train
author_rank: Newbie
timestamp: January 17, 2024, 06:52:28 am
content: Hi all,I recently purchased a JBC CD-1BQF soldering station to replace my Aixun T3A in light of its grounding/voltage leakage issues, and I noticed that the genuine T245 handle of the CD-1BQF buzzes/chatters when heating. It's definitely noticeable during its initial heat up shortly after turning on the unit, and it's faintly noticeable when the handle is at idle. It's similar to the buzzing that the T3A can suffer from, but from memory the T3A's handle buzzes louder and at a higher frequency.For those that have this unit or a previous version of this unit, does your T245 handle have a faint buzz/chatter when its heating? Is this normal?I've attached a recording of the noise and a screenshot of its spectrogram. It was recorded using my Pixel 6's microphone placed directly on the foam handle with a C245774 cartridge installed, and left idle. +40dB of gain was added afterward.Thanks!

author: uli12us
author_rank: Contributor
timestamp: January 19, 2024, 05:41:37 pm
content: Strange, I have a JBC BT-2BA and an Aifen/Sugon A9 JBC-Clon and can't remember any sound from any of these machines. Only the A9 have a Beeper inside. With this, the first action was to deactivate that silly noise.

author: belzrebuth
author_rank: Frequent Contributor
timestamp: January 19, 2024, 08:35:22 pm
content: I just got a JBC bt-2bqa(this is the cheaper one without the display) with T-245A handle and it's also making a sound exactly like the one you describe.It's not noticeable in a loud setting but it's certainly audible when it's quiet.I thought that it was the unit itself and not the handle...I'd hate to return it because I'm already using it and it works okay, just hoping it's normal but it can indeed get annoying if you concentrate on it.

author: maxmatteo
author_rank: Contributor
timestamp: January 28, 2025, 01:34:46 pm
content: hearing the same noise with my JBC bt-2bqa.i dont accept this for a 300 bucks soldering station... might return/replace ithopefully its not a general issue

author: belzrebuth
author_rank: Frequent Contributor
timestamp: January 28, 2025, 03:34:54 pm
content: I think it might be a general issue..Where did you purchase this from?

author: maxmatteo
author_rank: Contributor
timestamp: January 28, 2025, 03:57:47 pm
content: i ordered here:https://eleshop.de/also wrote a mail to JBC..lets see what they say...

author: Phaseseeker
author_rank: Regular Contributor
timestamp: January 28, 2025, 04:19:11 pm
content: The clone JBC handle on my T3A does the same and I always thought it was because of thermal expansion making the cartridge move inside the handle connector, but it's just my hypotesis and I might be wrong. Difference in sound between stations might then be caused by a different temperature control loop frequency...On my handle, pushing the cartridge further down the handle seems to quiet it down at least for a while.

author: belzrebuth
author_rank: Frequent Contributor
timestamp: January 28, 2025, 04:19:53 pm
content: This is where I also ordered mine.They replaced it and then the replacement also had this issue.I then replaced it with the more expensive model with the LCD.That model has a different issue but I kept it because I needed it at the time.The older JBC models were solid, maybe there's something wrong with current batches.

author: Electro Fan
author_rank: Super Contributor
timestamp: January 28, 2025, 04:23:43 pm
content: Quote from: maxmatteo on January 28, 2025, 01:34:46 pm300? looks like new price is >2x that

author: Haenk
author_rank: Super Contributor
timestamp: January 30, 2025, 08:23:14 am
content: (on a sidenote: my Ersa handle does also make a buzzing noise when under load - maybe that's some PWM driving going on there?)