Download HUNG CHANG HC OSCILLOSCOPE service Page 1 × – 45k – jpg PROTEK PC USER SM. Protek (Hung Chang) Pc Oscilloscope in good condition, comes with Oscilloscope Probe Kit. If you need any more photos, we will be glad to send you as many as you need. | eBay!.

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For a better experience, please enable JavaScript in your browser before proceeding. You seem to be having a problem getting the beam to show up below a certain point on the screen. Their approach is–diagnose from the front panel. No softwear or cables will be sent.

To participate you need to register. The vertical position adjust is part of the vertical section circuitry.

Due to the nature of used and surplus equipment no guarantees or warranties either expressed or implied are offered unless specifically noted in the description. So, step one, diagnose the faulty section.

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Media New media New comments Search media. No the intensity and focus is fine.

Learn More – opens in a new window or tab. Analog Layout Finger Size 4. How do you get an MCU design to market quickly? See all condition definitions – opens in a new window or tab Electro Tech is an online community with chqngmembers who enjoy talking about and building electronic circuits, projects and gadgets.


Subject to credit approval. Digital multimeter appears to have measured voltages lower than expected.

All buyers must contact us at the end of the auction if invoice through ebay has not been received. Add to watch list. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at In the PDF take a look at the chapter called “Troubleshooting the Vertical Section” Let’s see if we can isolate down to the block, circuit and then component levels.


Protek P (Hung Chang)

You mean you can’t focus the beam with the focus knob? You must log in or register to reply here.

Had to search a bit. Not sure what you mean by being unable to “get things to move around ground?

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Read more about the condition. What I predict is going to happen is that the part of the waveform appearing above the top half of the screen vhang look normal while the bottom half will look wonky.


I captured some stills from the video just for my own reference.

This amount is subject to change until you make payment. The item may have some signs of cosmetic wear, but is fully operational and functions as intended.

Service manual – Protek P3502 (Hung Chang) Oscilloscope

Read section in the service manual for a little overview of how the vertical section works I have this Protek P aka Hung Chang oscilloscope that has a couple of power resistors that got cooked. Synthesized tuning, Part 2: Learn More – opens in a new window or tab Any international shipping and import charges are paid in part to Pitney Bowes Inc.

I couldn’t make out the settings but that is ok. You are covered by the eBay Money Back Guarantee if you receive an item that is not as described in the hug. Protek P Hung Chang I actually ended up finding a service manual after all