Question about MJ Research Ptc-100 Programmable Thermal Cycler

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MJ Research PTC 100 Heat pump not functioning how to rectify

The machine gives the comment heat pump not functionig .How can that be rectified?

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Wanting manual


http://www.harlowscientific.com/pcr-thermal-cyclers/mj-research-ptc-225-tetrad-thermal-cycler-pcr-system-harlow-scientific

google is easy to use

Feb 23, 2013 | Stryker Stretcher, Gurney, Patient...

1 Answer

The microwave comes on and seems to cook but does not cook . It makes a very loud humming noise and the turntable goes around but there is no heat to cook anything.


you either have a bad magnatron, that is trying to heat but won't or you could have a capacitor or diode (rectifier) that is bad. if you order a magnatron replace capacitor and diode (rectifier)

Feb 24, 2011 | Kenmore Microwave Ovens

1 Answer

Heat pump is not working


Please check reversible valve. (RV).for click sound, when you keep in heat mode and temp +5 degree than your room temp.If no sound check for power in RV. If no power call repairman to rectify.
If click sound in RV and still it's not heating, check gas pressure.

Jan 22, 2011 | Heating & Cooling

1 Answer

Over Stove Microwave, all works except doesn't heat


Hello. The problem you are having with your microwave is due to either a shorted rectifier or a shorted magnetron.
Regards, Joe

Dec 23, 2009 | Microwave Ovens

1 Answer

Washing Machine starts, squirts water, then stops.


E5E  IS FOR  Communication problem. THERE IS 100 %WIRE SHORTING SOMEWHERE.PLEASE CHECK OUT.
ALSO OTHER ERRORS Error code - Fault condition
E11 Fill time too long.
E13 Water leak in tub or air leak in air bell.
E14 Reed switch.
E21 Water not pumping out fast enough.
E23 Drain pump relay on control board failed.
E24 Drain pump relay on control board failed.
E31 Better models. Pressure sensor not communicating with control board.
E35 Better models. Pressure sensor indicates water overfill.
E41 Control board thinks the door switch is open.
E42 Door remains locked after cycle is completed.
E43 Control board problem. 
E44 Control board problem. 
E45 Control board problem. 
E46 Control board problem.
E47 Board thinks the door PTC circuit is open in spin.
E48 Board thinks the door PTC circuit is closed.
E52 Bad signal from tacho generator.
E55 Motor overheating.
E56 High motor current.
E57 High current on inverter.
E58 High current on motor phase.
E59 No tacho signal for 3 seconds.
E5A High temperature on heat sink.
E5B High temperature on heat sink.
E5C High temperature on heat sink.
E5D Communication problem.
E5E Communication problem.
E5F Communication problem.
E67 Input voltage on microprocessor incorrect.
E75 Better models only. Water temperature sensor circuit.
E76 Better model only. NTC temperature for the cold water valve over the limits.
E95 Communication error.
EB1 Incoming power frequency out of limits.
EB2 Incoming line voltage above 130 VAC.
EB3 Incoming line voltage below 90 VAC.
EF1 Clogged drain pump.
EF2 To much soap.

Nov 12, 2008 | Frigidaire GLTF2940ES Front Load Washer

1 Answer

Marantz SR7400 AV Surround Receiver


Try resoldering the main bridge rectifier on the power amp circuit board. You will have to remove the board from the heat-sink. The rectifier is mounted off the side of the board and screwed to the back of the heat-sink. Resoldering this usually cures that problem.

Oct 07, 2008 | Televison & Video

1 Answer

Fuses


Hi there!

Dead short in the power supply, possibly the rectifier or the PTC has failed. PTC located in the Primary supply at the point where the coil around the tube plugs into the Main board. Two terminals to be exact. Normally cream in colour if it is an original Philips PTC. If the rectifier is short you may expect to have more items blown. Good Luck, Regards, JUS004

Mar 22, 2008 | Philips 27PT5441 27" TV

1 Answer

Philips 27pt5441/37


Hi there!
Dead short either in the power supply or rectifier, or PTC faulty.
PTC is cream in colour close to the mains on/off switch. Regards, JUS004

Mar 22, 2008 | Philips 27PT5441 27" TV

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