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Author Topic: Someone can repair a 1084s monitor?  (Read 2160 times)

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Offline Plaz

Re: Someone can repair a 1084s monitor?
« on: May 09, 2021, 04:45:08 AM »
the cost will be high or even prohibitive

Yes.  :(

"Flyback transformer" failure was a common problem with certain versions of the 1084 and 1084s models.
But it's been a couple of decades since replacement flybacks were available.

Senario 1 ..the flyback leaks or shorts completely, which then kills other components in the high voltage section and the power supply.
The 1080's were work horses and also many of the earlier 1084's.
However in Commodore's last years I found the later model 1084 and 1084s to be very cheaply made with higher failure rates.
(and don't even get me started on their multisync 1950 and 1960's :P)


This is a quick test for a technician that might cost a $2 fuse.
With power removed, open the monitor and blowout ever bit of dust. Especially around and under the flyback and also the back of the tube.
Inspect the circuit board for any burns or very dark colors. If any damage is seen... abort.
If the circuit board looks clean, replace the fuse, re-assemble, and power up.
Three possible outcomes...
1 - Turns on (Yay! Until it goes out again some day)
2 - Pop! (bad and expensive components have blown the fuse again)
3 - Power button light flashes. (power supply and other components are probably ok, but the flyback has died)

If a repair is needed, it would be expensive and maybe not even possible due to lack of available parts.
I'd look at some of the other options available these days that have a better looking picture.

Plaz
(with thousands of monitors repaired in an alternate time line)


 

Offline Plaz

Re: Someone can repair a 1084s monitor?
« Reply #1 on: May 09, 2021, 10:12:02 PM »
It is easy enough to source some 1084S parts.

Nice, the amazing world of "old stock" on ebay.

As Castellen mentions, make sure it's an exact number match.

Plaz