FRONT CURCUIT BOARD HAS BLOWN.

I hate to say this but a blown fuse in that machine wouldnt trip the breaker, so if you turn the breaker on and it stays on until you start the machine the motor is probably shorted and need to be replaced

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first check all connections on circuit board are tight if ok change interlock,if problem still persists you have a circuit board fault which could have been caused by blown interlock

could be motor not rotating under pressure. When you say brushes have you removed them from motor to check them, also check they slide in and out thier holders ok, as they may be sticking

hi try changing motor brushes (carbons).... if they ok check pump filter and test with volt meter on heating element on contonuity test.it should be in curcuit..

Lenovo's web-site: http://www-307.ibm.com/pc/support/site.wss/homeLenovo.do
should have the information.

What connectors are leading from the front-panel?
One "clump" of wires and one connector, or several separate connectors?

You won't get a new board cheap, unless it is a second hand one,not recommended.
Apart from which, the board has blown for a reason, usually caused by a faulty motor, so if you bought a new board, chances are it would blow again
Long term , probably cheaper to buy a new m/c.Your only other option is that if the m/c is under 5 years old, you should be able to get it repaired under the 5 year part guarantee, you pay for labour and call out.
Plz rate my solution.
TThanks.

check the wiring and make sure nothing metal is on the motor because your dryer has a short in it somewhere

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

I have just seen the same problem on a neighbours WD440G. I have tracked down the problem to the main circuit board at the back, bottom of the machine. Transistor/FET Q9 has exploded. There was water at the bottom of the machine and the wiring in the vicinity of the nearby connector was wet.
This neighbour is in no financial position to be able to buy a new board, or get an official Hotpoint engineer to confirm what we already know. Anyone know where I can get a schematic diagram for the board?

f30 code means there is a problem within the motor curcuit,check connections at the motor and check motor brushes are not worn.