Miele Control Board - Identify Power Supply IC

[Lion_Tamer]

Hi All

I am trying to mend a control board for a washing machine where the power supply IC has blown but as yet I have not been able to identify it and wondered whether the vast knowledge and wisdom of the community here could help.

The details that I can make out of the chip are:

• Make: Philips Semiconductor
• Package: 14 Pin Soic
• Line 1: ....2T
• Line 2: ....935
• Line 3: ....052

The board dates from around 2005/2006 era, I don't yet know why the chip failed but it is the only visually blown component, there is also a fusible resistor in the power feed to it that is OC.

The circuit layout around the chip appears to be this:

• Pin 1: Decoupling capacitor to ground? also feeds into a couple of transistor?
• Pin 2: Ground
• Pin 3: Ground
• Pin 4: Ground
• Pin 5: Ground
• Pin 6: Parallel Resistor and Capacitor to Ground
• Pin 7: Parallel Resistor and Capacitor to Ground, also feeds into a couple of transistors?
• Pin 8: Resistor to low voltage positive
• Pin 9: Ground
• Pin 10: Ground
• Pin 11: 1 Ohm Sense resistor to ground
• Pin 12: Not Connected
• Pin 13: Not connected
• Pin 14: Transformer Winding

Thank you

Jem

[rich]

very wild guess: http://www.farnell.com/datasheets/60405.pdf

[alsetalokin4017]

Looks very plausible. TEA1522T. Pinout seems to match.

[RichENZED]

Can I ask how you got on in the end?

I tried once in the past.
I had an exploded TEA1522t and bought a replacement from eBay.

Mine turned on but there was another fault where the water inlet valve operated continuously.

Did you have better luck?