Amiga Video Toaster
/ Flyer FAQs
Amiga Video Toaster
Calibration and Maintenance
General Troubleshooting Notes
Product: Video Toaster
Platforms: 2000 3000 3000T 4000 4000T
Problems specific to the Flyer are documented within
the Flyer FAQ. Flyer owners will also need to consult
the Toaster FAQ when troubleshooting a problem, because
those problems specific to the Toaster or the host
Amiga are documented within the Toaster FAQ.
The Toaster/Flyer depends heavily upon the Amiga custom
chip set for the work of creating graphics and combining
graphics with video. In many instances, what seems
to be a defective Toaster/Flyer is actually a defective
Amiga custom chip. For this reason, it is wise to always
follow several steps to eliminate the Amiga as the
cause of the problem before you conclude that you need
an RMA. Note that in the text below, where the phrase "Toaster/Flyer" is
used, you will need to apply the test to just the Toaster,
just the Flyer, or to both, as appropriate to the situation
you are attempting to resolve.
-
Test the Toaster/Flyer in another Amiga system.
If the problem does not occur in the second system,
you should suspect the first system is faulty.
-
Test a different Toaster/Flyer and in the host
system. If the problem persists, then the host
system is likely at fault.
This may be difficult to do if you do not have recourse
to a dealer, but if you can do these tests, you may
save an unnecessary RMA, plus a no-defect labor charge
from the Repair Department, which is levied even on
in-warranty Toasters or Flyers.
On an Amiga 2000 or 3000 series computer, the major
chips are socketed, and it is easy to substitute a
new chip for a suspected faulty chip. 4000 series machines
have surface mount parts, so most users will need to
resort to a service center to have these chips checked.
-
Since the Denise (2000/3000) or Lisa (4000) is
the chip on which the Toaster is most dependent,
try replacing it first.
-
The Agnus (2000/3000) or Alice (4000) is next
most likely, and the Chip RAM also carries out
many functions required by the Toaster.
-
The Video Hybrid chip in the 2000/3000 is also
a possibility to consider.
-
On the 3000 and 4000 systems, the bus-related
chips such as Buster or Fat Buster may also affect
Toaster operation, and the Flyer can be affected
by bus circuit or chip problems in all Amiga models.
-
U198 on the 4000 is known to cause difficulty
with Toaster (see Pink Screen AGA) and with other
cards, if it is delivering inadequate -5 VDC to
the bus.
-
On all systems, inadequate or variable power from
the power supply lines can cause faulty operation
of the Toaster or the Flyer.
-
Faulty solder joints among the slot connector
pins, slot connector contact springs which have
been bent outward to the point at which they will
no longer firmly connect with a card edge in the
slot, and dirty contacts on the edge connector
of the Toaster or Flyer board will also cause performance
failures.
Bear in mind, even if no applications but the Toaster/Flyer
exhibit display problems, this can still indicate a
fault in the Amiga. No other application on your machine
is doing what the Toaster is doing: the Toaster has
been inserted into the video circuitry of the host
computer via the video slot, and if only the functions
of the Amiga chips and circuit components which access
and control the video slot are broken, then only the
Toaster (and Flyer, if also present) will exhibit problems.