A peltier powered dryblock from Isotech that stopped working. There was no current flowing to the TECs (peltier elements). That can be caused by a dead controller, dead PSU or dead TECs. They should have a very low resistance so that … Lees verder →
This one had a few fried resistors due to a short caused by damaged isolation from a wire. I first removed the resistors. The picture above is after cleaning with IPA. The pads are loose but not damaged. The black … Lees verder →
Fluke uses a resistor divider to tell the processor in what position the switch is. It is made from a sort of carbon film. At the picture above you can see it. This meter has also a problem … Lees verder →
This Megger is one that is made to measure milli and micro ohms. It uses a 2A current for this. The meter part uses a ICL7107, a multimeter IC that is around for many years. It is f.i. used in … Lees verder →
This tester is made unchanged for many many years. It can deliver 5kV and do 100mA. This unit was as dead as an instrument can be. The biggest problem was the power supply transformer that was dead. it has several … Lees verder →
Repairing calibrators is always fun. This one had no output. It has the 120mA option but that was dead too. The fuse was blown, a logic-opto and a p-channel jfet were dead. The IC caps had a very high leakage … Lees verder →
A Fluke scopemeter made in 2010. It stopped charching and turning on resulted in a few seconds before it switched off again. A new battery did not solved the problem and that is why it arrived here. According the owner … Lees verder →
This LCR meter was dead. Hameg was always very helpful in providing manuals.To bad this is not the case for the newer gear. This is a very nice LCR meter with a lot of useful functions. This is the power … Lees verder →
Dit is een Behlman BL1350 1,35kVA AC powersupply. Een erg zwaar apparaat dankzij 2 enorme trafo’s. Deze was gemodificeerd, waarschijnlijk voor een vaste meet opstelling. Het gevolg was dat hij niets meer deed. Dit was gedaan met een extra PCB … Lees verder →
Deze scoop was door iemand gebruikt gekocht en zou prima werken. Helaas was dat niet het geval en de verkoper reageerde niet meer. Het ding flitste een keer met wat ledjes en dat was alles. Dit zijn geen apparaten om … Lees verder →