You can measure the trimpots across the carbon track to find out the value. The type is a common cermet and nothing special at all. Setting up the circuit will be in the service manual so you do need it. You are fortunate. You own an oscilloscope from a manufacturer who is actually willing to provide service manuals free of charge by email. I used to sell Hameg equipment.a high class firm to deal with.

Hameg used to provide the schematic at the rear of their user manuals but that stopped for reasons not known to me, but could be due to the R&S take over. Whenever I buy a piece of Hameg equipment I always contact Hameg Customer Support and ask for the service manual (I did this with my HM305 which is similar to your unit) Hameg have always sent me the full service manual by return email. As the HM3xx series is quite old there isn't really an issue with providing the service data. I would not expect the service manual for the latest models to be available to the public. Sadly the HM3xx series CRO's do not have the greatest reputation for long term reliability but most faults are simple to repair. The earlier HM2xx series are built like outside toilets and seem to last forever. Send customer support a nice email and all should be well.

Kind Regards Fraser. Hi All, Please help me with HAMEG HM303-6 service manual I have some problem with Old Hameg HM303-6 and looking for service manual. Even try to get help from Hameg/R&S customer support but unfortunately. I find only the Hameg 303-5 service manual on the internet space but this model have quite a different schematics. The problem with my Hameg is CRT, No beam/image. Everything else seems like works.

And without the schematic I don't want to risk with measurement in HV part. I tried to change Optocoupler CNY17-2 which is on the power supply board, but nothing changes, Checked all transistors in the power supply and CRT board.

Seems like they all is OK. Powersuite 2.6 Schneider. No burned components, 'cold soldering' problems, or any other obvious defects. Anyway I need service manual or schematic for Hameg HM303-6 model. Guys if you have idea where can I get service manual for HM303-6 please share I will appreciate that.

Electronics service manual exchange. Hameg hm 303-6: Full Text Matches - Check >>hameg hm 303-6: Forum Matches - Check >>Found in: fulltext index (43).