My Whirlpool fridge's (S21S4D) display panel was flickering and clicking for months. We turned it to standby to clean it and now it won't switch back on. Any ideas?

How do I reset my Pioneer VSX 1121?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px; transform: rotateZ(-180deg);">
1 Switch the receiver into standby. 2 While holding down ENTER on the front panel, press u STANDBY/ON.

1. Switch the receiver into standby.
2. While holding down ENTER on the. front panel, press u STANDBY/ON. The display shows RESET c NO d.
3. Select 'RESET' using PRESET. k/l, ...
4. Press ENTER to confirm.

Bad wiring or faulty sensor would cause the relay to be activated and tell the solonoid to open whenever it likes. I would replace the door switch or see if it is sticking otherwise you may be looking at control board problems

Hi and welcome to FixYa, I am Kelly.

This appears to be a Whirlpool side by side unit. Commercial Code 858618353010 / Model S21S4D. If I got the brand incorrect please respond with your brand name.
I do not know your geographic location. I am assuming you are outside of the US.

There are a couple of troubleshooting links I will post here. Keep in mind that they are for US units but the only difference will be the operating voltage:
http://www.american-appliance.com/catalog/newsdesk_info.php?newsPath=12&newsdesk_id=34 This is for the BASIC ice maker without optics.

And Job Aid R-92 (With optics)
http://adcxns1.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/8527f904cc8ea8cd85256b5800672333/$FILE/4322658A.pdf
Note there are 2 different optics for these. Pre and post 2002. You will have to determine which one you have. The troubleshooting steps require that you TAPE the door / light switch in the depressed position. Ensure you read all of the set up steps.

Often ice makers stop cycling because the ice maker thermostat never reaches 14 - 16 Deg. F due to a problem with automatic defrosting. Ice builds up on the evaporator coils and air-flow in the freezer gets restricted. It will still freeze but won't make ice until the ice build up is excessive.

If you think you may have an automatic defrosting problem do a MANUAL defrost with an external fan by turning the unit off, removing the freezer contents and directing an external fan into the freezer compartment for just over 2 hours. (water mess so be ready)
While the fan is melting the ice in the freezer compartment... open the lower rear of the unit by removing the fiberboard cover and cleaning the condenser coils, condenser fan, the drip pan and the ver end of the compartment drain tube that terminates in the drip pan. Reinstall rear cover when complete.
After the 2 hours clean up the mess and return the unit to normal service. The unit should start making ice within 8 hours. It will operate normally for 2 days and then if the automatic defrost problem exists... ICEMAKER and freezer performance will degrade after 2 - 3 days.

Hopefully you have enough information now to troubleshoot your icemaker issue.
Thanks for choosing FixYa,
Kelly

When it flickers, can you still see the text when the screen goes dark?
May have to use a bright flashlight set right on the display to see
the text on the screen beside where the light sits.
That will tell you if it's the backlight.

You can also look at a grazing angle into one of the edges to see if the
backlight is flickering when the display does.
When it's cold, does it start with a slight pinkish color? That can be
a sign of backlight going bad.
Anything interesting happen when you flex the cable by moving the screen?

I'm not saying it's impossible, but I've never seen software cause
consistent screen flicker. And if the vga port doesn't flicker, sw is
even less likely the problem.

If you bet the odds, you'd bet on a bad display cable.
Won't hurt to try replugging it.

If that doesn't help, then your monitor may be dying....

the clicking is from the lamp relay which makes the lights flicker and its located on the units rear area in the back,without a model number i cant tell what this boards model number is but you need to replace this whole board as they are non repairable(this is usually caused by a power surge or outage,which can destroy these boards,also even if a lamp in the unit burns out this can destroy this board too)

You have a defrost problem going on. Either the defrost timer, the defrost t-stat or the defrost heater. Remove the back freezer wall and you will see the evaporator coils. This is where the heater and t-stat are located. One of these is more than likely the problem.

http://shared.whirlpoolcorp.com/product_literature/search.jsp
If you have more model info. try this link.

Also have the same problem of flickering Whirlpool American Fridge Freezer display, which seemed to start when I changed the filter.

have you cleaned the coils under the unit remove the toe kick in front and use a shop vac

maybe the bulb is not compatible with a frigde itself. It is not like a convential house bulb that you can plug it on the socket and it will light up..
since these special light bulbs has low voltage.

if you want, you click this link below to purchase the right bulb.
http://www.kitchenaid.com/catalog/accessory_category.jsp?cat=1665

hope this will help yah!! Goodluck!!