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From: Samuel M. Goldwasser on 18 Oct 2009 19:21 Archon <Chipbee40_SpamNo(a)yahoo.com> writes: > Samuel M. Goldwasser wrote: > > Someone asked me about these oscilloscopes. Apparently he has a dozen > > of them that do not power up. No display or backlight on the LCD. Yes, > > AC power is set correctly. I haven't seen them so don't really have any > > more info. > > Anything common with these? > > Thanks! > > -- > > sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ > Electrolytics, almost always on these, throughout the PSU, input > attenuator board, XYZ board. Usually all will need replacing, can > total 30-40 caps. Tedious job for a 50/60MHz scope. Couple of > unavailable IC's in the preamplifier fail regularly causing offset > traces. Backlights usually fail on the LCD but you won't know until > you get the scope up and running, its just a mini filament lamp, > available from www.jetecnet.com Thanks! That's exactly the type of information I was looking for. The owner won't be happy. -- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |