Why cant you find a simple circuit board when i have all the numbers and parts information! Its a R&D by CJH #02-01633-01 can you help?

To find a circuit board for a Singer Magic Press 4 with the part information "REV. A 201762 PC1 Worldtronics WT-3089," you have to try searching online marketplaces, specialized electronics stores, or any contacting Singer who has authorized service centers for availability.

that comes up as a craftsman brand by sears ( mass produced )
variable speed grinder

I cant find an exploded view or user manual
if you cant get the value information
think you will be up for an oscilloscope

Hi - I'm an electrician and can help you with your question.

A BR2100 circuit breaker is a 2 Pole 100 Amp (for the part number "BR2100", the "2" indicates the number of poles and the "100" indicates the amperage) circuit breaker. It can be installed in a single phase or three phase 120/240 VAC system panel that specifically lists the BR series breakers as acceptable for use.

A BR260 A BR2100 circuit breaker is a 2 Pole 60 Amp (the part number BR260, the "2" indicates the number of poles and the "60" indicates the amperage) circuit breaker. It can be installed in a single phase or three phase 120/240 VAC system panel that specifically lists the BR series breakers as acceptable for use.

It is not possible to have a BR2100 rated for 60 amps, 1 or 3 poles, or a BR260 rated for 100 amps, 1 or 3 poles.

It is not permissible to install any circuit breaker brand or type in any panel that does not specifically include it on a list of acceptable circuit breakers.

Circuit breakers are designed to carry 80% of the amperage rating.
To determine the load a circuit breaker can carry, multiply the circuit breaker amp rating by 80%. This means that if you need to supply more than 80 amps, you cannot use a 100 amp circuit breaker. A higher rating is required. A BR2110 would be acceptable for loads greater than 80 amps, but less than 88 amps because the formula above says: 110 amp x 80% = 88 amps.

To determine the breaker size, determine the load (by measuring with a meter or obtaining amp rating of the load from the data plate) and multiply it by 125%. Using the same numbers in the example above; assume an 88 amp load. 88 amps x 125% = 110 amp circuit breaker. The 60 amp breaker is acceptable for up to 48 amps because 60amps x 80% = 48 amps. A 48 amp load needs a 60 amp breaker because 48 amps x 125% = 60 amps.

I hope this helps and good luck!

"F3" on a GE / Hotpoint microwave means you have a shorted membrane keypad.

On RVM1435-series microwaves, the membrane keypad is not available as a separate part, so you would have to order the control panel frame assembly which comes with a new keypad.


In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.
You can find helpful exploded view diagrams and order parts by entering your full model number (RVM1435XX###) from the tag on the oven here.

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.

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.




Some connectors on the relays have a lock:

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

I'm assuming that model number is HVM1540DM1WW?

You have a failed membrane keypad.

On this model, the membrane keypad is not available as a separate part, so you could just order the control panel frame assembly which comes with a new keypad. In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.
It is part number WB07X11012 (a.k.a. AP3993720) and you can get it from the Pros here for $55.06 plus shipping. They're our favorite supplier. You can find helpful exploded view diagrams and order other parts & accessories by entering your full model number from the tag on the oven here.
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. Then you unplug the keypad (as per the photo below) and move the circuit board into your frame. Some connectors on the relays may have a lock:

F3 on a GE / Hotpoint microwave means you have a shorted membrane keypad.

On some models, the keypad is available separately.

If you (or someone you know) might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

If you would like to have us do this repair for you, we do that for $39.95 plus part costs nationwide.

But please note that for some GE models, the membrane keypad is not available as a separate part, so you would have to order the control panel frame assembly which comes with a new keypad.

In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.

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.

Next, disconnect the strip as shown in the photo below, then remove the screws that hold your circuit board in the old frame.



Then carefully (since the display is made of glass) move your circuit board to the new frame, and reassembly is the reverse of disassembly.

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

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

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

If by circuit board you mean a piece of copper circuit track it is still quite possible to repair quite cheaply.

If you mean a real part of the circuit board from the actual silver box (demodulator) then again these are pretty common and not too expensive to get hold of and repair

If however you mean part of the main circuit board for the TV it may be possible to repair bu you may be looking at more cost than you wish to spend.

If you feel competant in soldering then the first two are pretty simple.

You would either work out what part of the track was broken and run a small lead from where it is on the board to where it was supposed to go.

If its the silver box there are numbers on it from which you can order a new one, remove the old one and simply replace.


If you found this information useful then please click below

They are not publicly available. Mackie authorized service centers are the only places that will have that information. The amp (if it has failed) requires a bit of skill to rebuild, and up to 100$ in parts alone. (not including the speaker driver if it's blown). I have repaired several of these in the past, and they aren't that simple. There is also a service bulletin about 2 diodes that usually need to be swapped with one another because of a defect during manufacture (the parts were installed incorrectly). (One is D20) if you rebuild the amp, and fail to address the diodes, it will fail again very shortly.

You can only get the service information from a pay for service. They will charge you money for a copy of the information.You can find the service information with the use of a search engine. Use the brand name of the television and model number,ask for service manual. You can call the Panasonic customer support telephone number and ask them where to purchase the parts and service information. The telephone number is 1-800-211-7262 between the hours of 9am-7pm EST. They will help you with the service information and parts. If you have never done this type of repair before you will need to upload the schematic or service manual and ask for help from one of the experience television technicians. The troubleshooting will start from the power supply and continue until you fix the problem. This will require tools, test equipment, and a work space to work on the television. You will want to visually inspect the circuit boards for bad components and test the one that are suspect. You will have to unsolder some components to test them. This may require advanced solder techniques. This is because the boards are layered and can be damaged if not worked on properly. Hopefully this problem is only in the power supply board. Which is the simplest repair. I hope this information helps you with your repair.

The short answer is yes, but it is not that simple. There are a number of reasons for the symptoms you describe. If you have no experience with repairing these amps, I would suggest that you get a detailed repair estimate from a servicer and post the results here. We should then be able to guide you throught the actual repair. Expect the estimate to cost around $50.

Dan