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- Newsgroups: comp.sys.amiga.hardware
- Path: news-1.csn.net!ub!dsinc!scala!scott
- From: scott@scala.scala.com ("Scott Drysdale")
- Subject: Re: Burned up 1960?
- Message-ID: <1996Feb26.061354.2690@scala.scala.com>
- Date: Mon, 26 Feb 1996 06:13:54 GMT
- References: <4esn78$9tg@erinews.ericsson.se> <800.6611T573T58@genie.geis.com> <4fhjhc$plk@utdallas.edu>
- Organization: US Research and Development - Scala Inc.
-
- In article <4fhjhc$plk@utdallas.edu> jochoa@utdallas.edu writes:
- >On 7 Feb 1996 15:59:21 GMT, Steven Folberg scribbled the following:
- >
- >>>After some hours of use, my 1960 burned up today... It smells funny when I
- >>>turn it on and sounds like bolts of lightning is flying around inside it...
- >
- >Mine just burned up last night. I called my dealer and they can try and
- >fix it for $120.00 if not then it's in the garbage can. Most depressing.
- >
- >I'm back to useing my old 1084S ugghhh.
-
- mine died with FZZZT noises and burning smells. i did the follwing, and
- it might work for you:
-
- unplug the 1960 and let it sit for SEVERAL hours (over night should do).
- take the case off, and remove any metal shielding covering the bottom of
- the big circuit board on the bottom. look for burn marks at the solder
- connections for the transformers. clean away the burned material, make
- sure the transformer lead is clean, scrape some of the solder mask off
- the damaged traces, and re-solder the connection with the help of a
- *SHORT* (1/4 inch) piece of wire (20 guage or so) if necessary.
-
- because the transformers are great heatsinks, they tend to get soldered
- poorly by wave soldering equipment. the bad joint is resistive and gets
- hot with the high voltages going through it and eventually burns up the
- joint and/or the circuit board trace near it. thermal expansion/
- contraction of the transformer doesn't help the situation either.
-
- you want the monitor OFF for several hours to allow the VERY HIGH LETHAL
- VOLTAGES to leak away. if you test run the monitor with the case off
- (not recommended), turn it off again for SEVERAL HOURS before attempting
- to reassemble it. those of you with discharge probes know how to use
- them. you might want to make sure someone's nearby if you try this in
- case you do get shocked unconscious.
-
- --
- Scott Drysdale // Scala Inc. // scott@scala.com // 1960 HD FLH // AMIGA!
- Sanitation Engineer // "where you gonna go when your 8520's blow?"
-