The PCBA assessment of the importance of [PCB copy board]
Update date：2012-6-26
Many times customers received the telephone counseling, PCB costs and asked the PCBA things, this time we say need to provide customers with the PCBA to assess, many customers are so simple board also need to assess?
The premise of the case if a customer wants to produce is that we provide one-stop service (PCB copy board, BOM production, thrust reversers schematic, welding, debugging, prototyping, production) this time we have to understand the customer's product because only a clear understanding of all aspects of product features in order to better help customers complete product replication and cloning work, you need to provide customers with a functional prototype and use instructions. Then we will have confirmed eleven, look at the board above the chip screen printing is complete, whether the chip which has a program, whether or not board the above materials can be 11 to buy, many people may think I am talking about space , I give them to you.
In 2009, when a customer, from the north, to take over an elevator control panel, had initially looked at the board above the IC has a silk screen, very successful decryption chip, directly copied the board, the purchase of materials, welding debugging, it is Express board welding, and get the result can be used not this time engineers on the raw materials to restore the board repeated tests, and finally found the problem, turned out to be an IC typing is not a chip model, the original is polished by others re-printed on the card, after we had this chip identification of the opening piece, find a real model, and then soldered to the board above purchase, no problem at all. This thing can not say that our assessment is not thorough, but the production when the encounter took place outside. If you think this case is not impressive enough, here are a typical example, a customer took a camera over to find our reverse research in March last year, when we first were the assessment, and then began to copy the board, and soon projects on the best debugging to find out how to debug bad, the original recovery is no problem, we copied the board file is no problem, the question arises in the material above, so an investigation, the results found an obscure encryption chip in the face of this chip, crack, burn, immediately OK, but delayed for some time.
In fact, many times we will find some code devices, some transistors, MOS tube, of course, these are not a problem, can be replaced, and some of the more vice-chip according to the code to reverse lookup models, and this work In many cases not so easy. This is also one of the risks. There are master chip decryption assessment is also a top priority, these are often the key to the project, the price is also very often a major cost where the ability to decrypt and decryption assessment part of the report. This time reflected the importance of evaluation, after the end of this part of the assessment, followed by assessment of the board copy board, this one is relatively simple, the deviation will not be great, this one is often based on the number of layers, Points to offer. The best there is a very important assessment is the assessment of costs, the customers are most concerned about their own investment and development funding, and then the production of the PCBA to go, how much cheaper than I buy, how much he can sell, whether make money, this is the most fundamental, only to earn money, it is worth to invest in this project, or assessment of good, is of no use. Again stressed that the assessment is very important.
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