Whirlpool washing machine L2158 control board

Alexbp · 01-08-2022, 12:59 PM

Whirlpool washing machine help determine the resistance r085
I will be very grateful

**petehall347** · 01-08-2022, 01:10 PM

looks like brown black green gold
1M Ohms 5%

Alexbp · 01-08-2022, 01:40 PM

The board shows 9 MOm
thank you so much

**stj** · 01-08-2022, 02:28 PM

how many times did it blow up?
i'm sure the factory didnt socket the psu chip!

Alexbp · 01-08-2022, 02:47 PM

I don't know how much, and I soldered a socket to make it easier to change later.

**CapLeaker** · 01-08-2022, 03:57 PM

Looks like something blew inside the socket?

**stj** · 01-08-2022, 06:06 PM

blew in the socket and incinerated an inductor so hard it burned the electrolytc next to it!

**CapLeaker** · 01-08-2022, 06:38 PM

What’s the part number on the IC?

**CapLeaker** · 01-08-2022, 06:41 PM

Quote:

Originally Posted by stj

how many times did it blow up?
i'm sure the factory didnt socket the psu chip!

Sorry, but I just had to

**R_J** · 01-08-2022, 07:41 PM

The part number is LNK304PN. The socket pin (pin6) that is burnt should not have a connection.
The repair kits have other parts that are likely also bad.

**eccerr0r** · 01-08-2022, 10:23 PM

Heh. Frying a ¼W 1MΩ resistor by itself tends to need to exceed voltage rating for dielectric strength as well as thermal limits at the same time...

Then again, if it fails dielectric strength along the outside, then it'd dissipate less power internally...

**CapLeaker** · 01-09-2022, 09:18 AM

Quote:

Originally Posted by R_J

The part number is LNK304PN. The socket pin (pin6) that is burnt should not have a connection.
The repair kits have other parts that are likely also bad.

Maybe the IC was inserted the wrong way around or a solder blob... bent pin etc.

**stj** · 01-09-2022, 09:58 AM

maybe the chip has the same weakness as TOPswitch's and oscillates itself to death if the startup cap is poor.

SeSeBe · 01-14-2022, 03:38 AM

The pin gap from the package MUST be removed from the socket to.
Is removed because of high voltage isolation necessary there and more, with pin removed is easy to not insert the IC wrong.

**momaka** · 01-21-2022, 03:04 AM

It's not a good idea to socket PWM-FET ICs, because they use the Source/return and Drain leads for keeping the IC cool. In a socket, this won't work and the IC will overheat.

01-08-2022, 01:10 PM	#2
petehall347 Badcaps Veteran Join Date: Jan 2015 City & State: worcester My Country: United Kingdom I'm a: Knowledge Seeker Posts: 3,273	Re: Whirlpool washing machine looks like brown black green gold 1M Ohms 5%

01-08-2022, 01:40 PM	#3
Alexbp Member Join Date: Aug 2021 City & State: Siegburg My Country: Germany I'm a: Knowledge Seeker Posts: 41	Re: Whirlpool washing machine The board shows 9 MOm thank you so much

01-08-2022, 02:28 PM	#4
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 26,818	Re: Whirlpool washing machine how many times did it blow up? i'm sure the factory didnt socket the psu chip!

01-08-2022, 02:47 PM	#5
Alexbp Member Join Date: Aug 2021 City & State: Siegburg My Country: Germany I'm a: Knowledge Seeker Posts: 41	Re: Whirlpool washing machine I don't know how much, and I soldered a socket to make it easier to change later.

01-08-2022, 03:57 PM	#6
CapLeaker Leaking Member Join Date: Dec 2014 City & State: Atlantic Canada My Country: Canada Line Voltage: Ground, 0Hz I'm a: Hobbyist Tech Posts: 5,218	Re: Whirlpool washing machine Looks like something blew inside the socket?

01-08-2022, 06:06 PM	#7
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 26,818	Re: Whirlpool washing machine L2158 control board blew in the socket and incinerated an inductor so hard it burned the electrolytc next to it!

01-08-2022, 06:38 PM	#8
CapLeaker Leaking Member Join Date: Dec 2014 City & State: Atlantic Canada My Country: Canada Line Voltage: Ground, 0Hz I'm a: Hobbyist Tech Posts: 5,218	Re: Whirlpool washing machine L2158 control board What’s the part number on the IC?

01-08-2022, 07:41 PM	#10
R_J Badcaps Veteran Join Date: Jun 2012 City & State: ☻ My Country: Canada I'm a: Professional Tech Posts: 8,154	Re: Whirlpool washing machine L2158 control board The part number is LNK304PN. The socket pin (pin6) that is burnt should not have a connection. The repair kits have other parts that are likely also bad. Last edited by R_J; 01-08-2022 at 07:51 PM..

01-08-2022, 10:23 PM	#11
eccerr0r Solder Sloth Join Date: Nov 2012 City & State: CO My Country: USA Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 7,202	Re: Whirlpool washing machine L2158 control board Heh. Frying a ¼W 1MΩ resistor by itself tends to need to exceed voltage rating for dielectric strength as well as thermal limits at the same time... Then again, if it fails dielectric strength along the outside, then it'd dissipate less power internally...

01-09-2022, 09:58 AM	#13
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 26,818	Re: Whirlpool washing machine L2158 control board maybe the chip has the same weakness as TOPswitch's and oscillates itself to death if the startup cap is poor.

01-14-2022, 03:38 AM	#14
SeSeBe New Member Join Date: Apr 2020 City & State: Iasi My Country: Romania I'm a: Knowledge Seeker Posts: 4	Re: Whirlpool washing machine L2158 control board The pin gap from the package MUST be removed from the socket to. Is removed because of high voltage isolation necessary there and more, with pin removed is easy to not insert the IC wrong.

01-21-2022, 03:04 AM	#15
momaka master hoarder Join Date: May 2008 City & State: VA (NoVA) My Country: U.S.A. Line Voltage: 120 VAC, 60 Hz I'm a: Hobbyist Tech Posts: 10,860	Re: Whirlpool washing machine L2158 control board It's not a good idea to socket PWM-FET ICs, because they use the Source/return and Drain leads for keeping the IC cool. In a socket, this won't work and the IC will overheat.

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