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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Oscilloscope Unaohm G4018
Hello There!
Has someone Service Manual for above mentioned oscilloscope and send me in PDF file (or similar). Schematic diagram will also help. Actually, I cannot adjust anymore "focus" and also "intensity" - became not adjustable. Instead sharp line on the screen I have "smear" line... Regards, Josip |
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#2
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Oscilloscope Unaohm G4018
jkaltne1 wrote: Hello There! Has someone Service Manual for above mentioned oscilloscope and send me in PDF file (or similar). Schematic diagram will also help. Actually, I cannot adjust anymore "focus" and also "intensity" - became not adjustable. Instead sharp line on the screen I have "smear" line... Check the resistors in the path of those controls. They go up in resistance and cause that problem. If they are OK, the CRT may be failing. -- http://improve-usenet.org/index.html Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm |
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