to order
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Above is a video box with 50 outputs, seen here monitoring signals on the CRO (CRO = Cathode Ray Oscilloscope)
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Signals and wave forms being monitored on the CRO (Cathode Ray Oscilloscope)
Above is a "reverse engineered" rough layout of a circuit board by which we had to "trace out" and derive a working electronic
circuit layout to effectively service and repair a 30 output video amplifer / distribution box for our client to use and work from.
This all takes time to carefully check for 100% accuracy and correct component orientation as well as the correct identification of each part.
The circuit above took 2 hours to trace out and a further 2.5 hours to carefully draw the relevent 100% accurate working electronic circuit.
Note: The circuit (above) was "reasonable", however the "LM3086N chip transistor array " exhibited thermally induced parasitics and a basic
lack of performance, inherent picture instabilty, features not conducive to a client's projected long term usage in a business where quality matters.
This more than likely resulted from aging stock and manufactured in circa 1994 and no longer made by NS, So, after in depth consultation
with our client, it was resolved that the unstable circuit boards were to be removed from the Video box and returned to our client, we set to and
designed a fresh "new circuit" approach was to adopted thus providing our client with 50 good solid video outputs from one video input source.
The scrapped circuitry was fully removed and using the fresh new idea and approach, a viable circuit design was skillfully produced,
prototyped and tested by us at Unitech and field tested at the clients premises with all benefits measured in terms of reproduced
picture quality on a series of video tapes and the final test of a copy from a copy, this is the "acid test " on how well a copy is being
made, the results were delightful, however, more importantly, our client was very happy with our efforts and especially our results.
As a bonus from prototye testing, we were able to include such benefits as 10 stage video signal attenuation to cater for video strengths.
Research and development on a project such as this takes time and money, more time and more money usually, however, the end
result is what counts, a very satisfied client , delighted with the extra efforts and attention to detail we took to make sure each output
was fully stablised and that all 50 video outputs functioned correctly, thus providing an excellent amplified video signal Video to all
50 outputs simultaneously to each and every VCR (VTR), with no distortion or color fade or drop out, even with the annoying Macrovision.
Labour rates Repairs and modifications.................AUD$110.00 per hour ($1.8333/min)........Plus GST.
(time taken in hours and minutes)
Please note: For repair work, it is advisable to acquire a correct circuit diagram prior to delivery
of your goods or equipment to be serviced and repaired. If one is not supplied, then we will need to
" reverse engineer " the circuit and trace it out fully establishing a correct operational drawing.
Labour rates design work Prototyping....................AUD$150.00 per hour ($2.50/Min)..........Plus GST.
(time taken in hours and minutes)
Please Note: Labour rates do not include any raw materials, chemicals or components nor do they include GST.
All parts and materials used are in addition to time spent on the client's behalf to get a project to fruition.
With regards to all repairs..........
Please, do be aware, we are not a "results only company", that is to state as in "only" being paid "only" if the
goods or equipment works. We accept "your goods" for repair or service "in good faith", however if it is found
at some stage during the repair(s) that the said item(s) for repair or service are not going result in a positive
working outcome, either due to the age of item(s) or component(s) that are "still now" available in stock, we will
advise you of the costs so far in arriving at this conclusion. All company time is accountable for.
This is only fair as where you work, you would not like to be NOT PAID as a result of a project or job not working out right
and your boss telling you, "tough luck mate...it did not work so no pay for the hours wasted on trying to get it going".
We require payment for company time spent on your behalf working on your goods or equipment irrespective of the final
results that the item(s) in question are working. We strive for perfection in servicing and repairs, however there are
times where component tolerances change over the years, thus often resulting in undesirable parasitics etcetera.
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