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- Path: coranto.ucs.mun.ca!bmontgom
- From: bmontgom@morgan.ucs.mun.ca (Byron Montgomerie)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: A1200 Display Problem - Can anyone help?
- Date: 4 Jan 1996 16:10:50 GMT
- Organization: Memorial University of Newfoundland
- Message-ID: <4cgu6a$g4m@coranto.ucs.mun.ca>
- References: <820618300.16269@bridelow.demon.co.uk>
- NNTP-Posting-Host: plato.ucs.mun.ca
- X-Newsreader: TIN [version 1.2 PL2]
-
- Steve Martin (steve@bridelow.demon.co.uk) wrote:
- : I've just bought myself a secondhand A1200 (and quite happy I am with
- : it too). The problem is, whenever the machine accesses either the
- : fixed or floppy drive, faint black bands appear horizontally across
- : the screen kind-of in time with the accesses (if you get my drift).
- : I've noticed this on both my TV and VGA monitor so I suspect it's not
- : the modulator. This glitch doesn't seem to affect the machine apart
- : from this. I find this effect damn annoying and I'd like to know if
- : anyone thinks it's a genuine problem, before I spend money on getting
- : the thing fixed. I've no reference point to work from you see...
- : maybe all A1200's do this?
-
- Only some revisions do this, there was a thread in .hardware dealing with this
- recently, the solution is to add a capacitor to the right of the ide connector
- on some SMD transister pads.
-
- ------Qouted article---------
-
- First I had to decrypt the post of Marko Pudas. It was two, not wto. There
- is an empty place for a SMD transistor about 1cm right of the IDE-connector.
- You connect the condensator mentioned with the two lower soldering points on
- the motherboard, and THAT'S IT. Wonderful.
-
- I only had a 3.3uF condensator, but it worked. I even tried a 220uF
- condensator, the screen was only a BIT darker, but even that worked.
-
- I tried to draw a little illustration:
-
- .. o <-- the three soldering points for a transistor
- .. o o
- .. | |
- .. | |
- .. ---
- .. |- +| <-- the condensator
- .. ---
-
- If you also see these flickering shadows, try it! Good luck!
-
- -----End of Quoted Article----
-
-
- Regards,
-
- BM
-
-