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JCD 8898 IC shorted
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Topic: JCD 8898 IC shorted (Read 1350 times)
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Niethate
Newbie
Posts: 5
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JCD 8898 IC shorted
«
on:
March 22, 2023, 05:39:31 pm »
Hello,
Does any one know which ic this is on the jcd 8898 trying to fix it or is there a schematic for
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coromonadalix
Super Contributor
Posts: 6856
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Re: JCD 8898 IC shorted
«
Reply #1 on:
March 22, 2023, 08:20:16 pm »
clean the top of the ic and check for markings ?
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Niethate
Newbie
Posts: 5
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Re: JCD 8898 IC shorted
«
Reply #2 on:
March 23, 2023, 03:17:42 am »
There ar no markings on it.
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GGMM
Frequent Contributor
Posts: 261
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Re: JCD 8898 IC shorted
«
Reply #3 on:
March 23, 2023, 08:26:47 am »
Hi,
Why did you unhook that chip?
What was the breakdown?
cdt
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GGMM
Frequent Contributor
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Re: JCD 8898 IC shorted
«
Reply #4 on:
March 23, 2023, 08:28:54 am »
If the iron was no longer working, it comes to 99% of the diode zener 5v on this PCB
Then replace with a classic zener other than SMD
cdt
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GGMM
Frequent Contributor
Posts: 261
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Re: JCD 8898 IC shorted
«
Reply #5 on:
March 23, 2023, 08:34:42 am »
My first blacout ---> the zener 5v
This is my second blackout here
https://www.eevblog.com/forum/repair/my-station-iron-hot-air-explosed-ref-jcd-8898/msg4711205/#msg4711205
if it can help you
Now working nice
cdt
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Niethate
Newbie
Posts: 5
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Re: JCD 8898 IC shorted
«
Reply #6 on:
March 24, 2023, 11:26:44 pm »
The chip gave me a short when I removed the chip all the shorts where gone
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Niethate
Newbie
Posts: 5
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Re: JCD 8898 IC shorted
«
Reply #7 on:
March 24, 2023, 11:31:03 pm »
I fixed the iron by changing the bta transistor, the heater doesn't work so I tested the components that I changed and it was all shorted again when I tried the heater so when I removed the chip all the shorts where gone
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DavidAlfa
Super Contributor
Posts: 6317
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Re: JCD 8898 IC shorted
«
Reply #8 on:
March 26, 2023, 02:22:42 am »
Perhabs a S3F94C8 mcu, seems common in
Hot Air stations
.
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Hantek DSO2x1x
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DON'T BUY HANTEK!
(Aka HALF-MADE)
Stm32 Soldering FW
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Niethate
Newbie
Posts: 5
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Re: JCD 8898 IC shorted
«
Reply #9 on:
March 26, 2023, 12:21:54 pm »
Thank you will buy one and let you know how it went
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DavidAlfa
Super Contributor
Posts: 6317
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Re: JCD 8898 IC shorted
«
Reply #10 on:
March 26, 2023, 12:38:17 pm »
It's a mcu, so replacing it won't make it work, must be programmed, I doubt you could do that easily, nor getting the original firmware.
At this point, just get a new station, or try to find a new board.
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Hantek DSO2x1x
Drive
FAQ
DON'T BUY HANTEK!
(Aka HALF-MADE)
Stm32 Soldering FW
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Github
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GGMM
Frequent Contributor
Posts: 261
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Re: JCD 8898 IC shorted
«
Reply #11 on:
March 26, 2023, 03:07:40 pm »
Hello,
I don’t quite understand your breakdown.
You say a short circuit, but on what?
Is it on the mains? Is it all blown up and the fuse?
I don’t see this circuit blowing the power.
When you say the iron worked and not the hot air, was there the temperature indication of the soldering iron?
Etc...
cdt
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