Question about Whirlpool GH4155XP Microwave Oven

1 Answer

Replacing a circuit board on a microwave

I need to know how to replace a circuit board on a microwave. my model number is GH9177XLQ-0. my serial is TRP1512931. what all do i have to remove.

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  • William Miller
    William Miller May 11, 2010

    What problem are you having with the board?

    We regularly repair such control units for
    customers nationwide by mail for $39.95 postpaid in about a
    week with a one-year guarantee.

    We've fixed them when the cooktop lights or fan failed or when the touch screen failed to operate, etc.

    At
    our Web site, we have a video
    available showing how to remove a typical
    over the range control panel assembly in under 5 minutes.


    After that, only a few more screws are required, then you have to have to carefully unlock the flat strip connectors for the keypad and touch screen.

    You can usually find
    helpful exploded view diagrams and order parts by entering your full
    model number
    here.

    There are two tiny tabs (one on each side) of the connector that you can gently pull up on to unlock the connectors.

    Then the keypad strip will lift out.

    To replace it, put the keypad strip back in, making sure both sides are down fully.

    While holding the strip down, push the connector back down to lock it.

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  • 11 Answers

It's very easy to do if you can get the circuit board. Take the two screws out of the plastic fan grill and pop it off. There should be one screw above the control panel. Take that off and the panel should pop off by slightly pushing up. Unhook all the wires and unscrew the board. Put the new board in and your done.

Posted on Jan 28, 2009

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1 Answer

Where is the fuse located?


If the model number is correct, there is a small input line filter board with a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:

http://pcappliancerepair.com/model-display.php


The line filter is listed as item 1420. The fuse will be mounted to this board.

You can purchase replacement fuses at any hardware store. You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

Apr 24, 2010 | GE JES1290 Convection/Microwave Oven

4 Answers

WHIRLPOOL MICROWAVE GIVING F-7 CODE


hello sir 

you are right magnetron is fully interrupted....... but tell me  !. do you want to repair machine( 4 sec problem) 2. do you want to buy inverter , magnetron  please tell i am ready to help you sir


I believe that is a microcomputer board failure. You will have to replace this board. Website below.

I have gotten parts from "repairclinic" on line and they worked fine. I saved $600 on the last repair of an oven. Good luck.






or sir you can find and fix each and every type of code error


http://www.applianceaid.com/micro_faultcodes.html#WLP

Oct 18, 2008 | Whirlpool MH6140XK Microwave Oven

1 Answer

The led readout is not readable, the numbers are just partially lit


The control board needs replacing. The cost is usually 75 dollars and up just for the board. You can order it from your neighbourhood appliance parts store. Just give them: Manufacturer, Model, Serial no's.
Changing the board can take about an hour. It is an easilly replacable module.

Jan 20, 2010 | Sharp R-530ES Microwave Oven

1 Answer

Whirlpool Microwave Oven Serial Number MH660XW-0


Hi Adam,
Built in over the range? The models change so rapidly unless it is less than a year old there probably wont be an identical replacement, Fortunately the mounting brackets remain close if you stay in the same brand. Whirlpools can be purchased at almost any retailer like Lowe's, Sears, BestBuy etc. Measure the the original and look for one that fits that dimension.
Eric

Jun 09, 2009 | Whirlpool Microwave Ovens

1 Answer

Replacing inverter board for my sharp R-2130JS microwave


I do not know how to specifically replace the "inverter board" in this model. On most microwaves I've repaired, though, the hardest part is getting them dismounted from the wall if they are rangehood models. I suspect that the inverter board is held onto the chassis with two phillips screws, and all the connections thereto are modular and therefore easily disconnectable and swapped out. The great majority of times, manuafactureres do NOT put multiple connectors of the same pin count and oriention on a circuit board. Give it a go.

Feb 27, 2009 | Sharp R-2130JS Stainless Steel 1200 Watts...

1 Answer

Need a replacement fuse for an Emerson Microwave Model MW8774


Please understand there are some liability issues that Emerson or their parts supplier have in selling you the fuse.

You should be able to find one by going online and searching with the terms you gave, using Google. I just did, and there are a number of hits to choose from.

Try Sears Parts Direct or Repair Clinic as well. You will need to enter your model number to find the parts listing.

In all likelihood, you have a failed controller board or microwave circuit (magnetron, transformer, diode, capacitor). Be prepared for additional troubleshooting.

REPLACE THE FUSE WITH AN EXACT REPLACEMENT> DO NOT REPLACE WITH A LARGER (more amps) FUSE TYPE.

Jan 16, 2009 | Emerson MW8777W Microwave Oven

1 Answer

GE JVM240 microwave - shut door, fan runs,can't set timer or cook


The "main" relay on the control circuit board is stuck (shorted) and needs to be replaced.

We regularly repair these control units for customers nationwide by mail for $39.95 postpaid in about a week with a one-year guarantee.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

4941a06.jpg

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1 Answer

Daewoo microwave problem


The Daewoo model # is WM 1010CC.
The unit blows a fuse every time I open the door to get food out.
Please suggest a fix!


Bart Gibbons

Nov 03, 2008 | Daewoo Microwave Ovens

2 Answers

Kitchenaid microwave/oven combo model KEMC308KSSO


The keypad circuit board must be replaced to start. Sometimes, the fault can also be on the main processor board.

Jerry G.

May 15, 2008 | LG LMV2055ST Microwave Oven

1 Answer

All functions work except no heat


In this case I would most suspect the magnetron (or a bad connection at the magnetron) or a problem on the control panel.

But generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.

Mar 13, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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