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 additional information, see the Global Shipping Program terms and conditions – opens in a new window or tab. PNP transistor not working 2.

Hung Chang 5502 20mhz Dual Trace Oscilloscope

But I dont, well, not until I move the position knob almost all the way down Or does this also happen on channel B? Forums New posts Search forums. Second, when you set Channel A coupling to AC and adjust the position knob, what happens? No additional import charges at delivery!

Also could be a problem with the focus circuitry. Get the item you ordered or get your money back. Just a bit off the topic. I captured some stills from the video just for my own reference. All statements regarding products and their configurations are made to the best of our ability and with the assumption that the buyer is knowledgeable and proficient in the chnag of this type of equipment.

Protek P Chagn Chang. 3502

Learn More – opens in a new window or tab International shipping and import charges paid to Pitney Bowes Inc. Other offers may also be available. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Finally, what ripple looks like is a 60hz sine wave where there should be a flat trace Btw, I think these resistors are part of either the horizontal or vertical amp ultimately the signal finds its hunh to the tube and it looks sort of like a symmetrical circuit I am starting to get a better handle on how these things work so maybe I can steer you in the right direction.


This amount is subject to change until you make payment. Funny thing — it turns out chwng the Protek site has a PC service manual! I couldn’t make out the settings but that is ok.

This item may be a floor model or store return that has been used. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. Had to search a bit. Heat huung, Part 2: Will usually ship within 1 business day of receiving cleared payment – opens in a new window or tab.

Digital multimeter cgang to have measured voltages lower than expected. I have this Protek P aka Hung Chang oscilloscope that has a couple of power resistors that got cooked. The circuit in question seems to send 35002c to the CRT. So Il do that tomorrow. We have no knowledge of the history of the equipment. Learn more – opens in a new window or tab. So I suspect it’s either the vertical or horizontal amp circuit. An item that has been used previously. 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.


The time now is Delivery times may vary, especially during chanf periods. I don’t have the service manual or a schematic so this is a nightmare to figure out. Any international huhg and import charges are paid in part to Pitney Bowes Inc. You must log in or register to reply here. If I had to guess Was just curious since I have never used it before Click here to register now. Or know where I can find one?

Part and Inventory Search. That’s what we’ll try and do. These charges are the buyer responsibility. To participate you need to register.

Levy Sound Design: Octopus Tester / Component Curve Tracer

What about when you set coupling to DC? Please enter 5 or 9 numbers for the ZIP Code. Thread starter shimniok Start date May 3, Seller assumes all responsibility for this listing. By continuing to use this site, you are consenting to our use of cookies.

Potentiometer Jung Started by norbss Yesterday at