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Go down  A1200 - Flicker/ Wavy Lines On Screen - Hardware Fix... [Page 1 of 1]

Franko

Franko
Admin
Admin
Do you have an A1200 that has flickering/ wavy lines on the screen, especially when it accesses the floppy or hard disk drives... Sad

Then fear not, here is the perfect fix that will get rid of that annoying flicker and give you a nice clean picture... Smilie

All that is required is a 1uf capacitor & a soldering iron...


Firstly here are two pictures of the A1200 motherboard (Rev 1D.4). Even though they have the same revision number depending where they were manufactured one has component in place (location D215) and doesn't suffer from this flicker problem, while the other has a component missing and this is the one that causes the annoying flicker...


A1200 Rev 1D.4 with component (D215) and doesn't flicker...
A1200 - Flicker/ Wavy Lines On Screen - Hardware Fix... A1200Rev1D4-01

A1200 Rev 1D.4 without component (D215) and does flicker...
A1200 - Flicker/ Wavy Lines On Screen - Hardware Fix... A1200Rev1D4-02


All that is required is a 1uf capacitor to be soldered to the motherboard as shown (location D215A) in the pictures below and this will eliminate totally that annoying flicker for good... Smilie

A1200 Rev 1D.4 location to solder the capacitor...
A1200 - Flicker/ Wavy Lines On Screen - Hardware Fix... A1200Rev1D4-02

A1200 Rev 1D.4 with capacitor soldered in place & flicker problem fixed...Smilie
A1200 - Flicker/ Wavy Lines On Screen - Hardware Fix... FlickerRepair02

And there you have it no more flickering or wavy lines, just a perfect smooth picture... Very Happy


_________________________________________________
The Amiga Lives As Long As You Want It To...Smilie
https://crap.forumotion.co.uk

Darrin

Darrin
A Wee Bit Chatty
A Wee Bit Chatty
Alternatively you can drink a bottle of scotch and then the wavy lines vanish into one big blurry mess.


_________________________________________________
A2000, A3000, A4000T, A1200, A1200T, CD32, Minimig v1.1, C-ONE, FPGA Arcade, Chameleon64, C64, C128, VIC-20

Franko

Franko
Admin
Admin
Darrin wrote:Alternatively you can drink a bottle of scotch and then the wavy lines vanish into one big blurry mess.

But I'm a teetotal Scotsman (very rare & hard to find) & Irn bru aint strong enough to have the same effect... Sad

On the the other hand me meds are quite strong they don't get rid of the wavy lines though and kinda introduce a new problem of lots of psychedelic colours... What a Face

But then after that you just don't care and everything is mellow... Afro


_________________________________________________
The Amiga Lives As Long As You Want It To...Smilie
https://crap.forumotion.co.uk

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