R10 - This resistor (second from the bottom) is a 3k8 1/8W, change it to a 2k2 1/8W.Ĭ3 - This capacitor is a 22uF 35V electrolytic, change it to a 47uF 35V electrolytic.ĭ3 - This diode is a 1N4148, change it to a BYV26, BYV95C or another Ultra Fast Shotky Diode (I used the BYV26E) - you may need to drill out the holes slightly for the legs to go through.Ĭ2 - This capacitor is a 220pF Ceramic, change it to a 1nF (1000pF) Ceramic capacitor. Q4 - This transistor (second from the bottom) is a BC557, change it to a BC327. R9 - This resistor is a 2k2 1/8W, change it to a 1k2 1/8W. Using the bottom pic as the reference, I will work from right to left. OK, still not 100% easy to see, but hopefully this will give you the idea when you are looking at your own.Īnyway, there are not that many parts that need replacing.
The above pic does make it a bit difficult to see what needs replacing, so here it is again, but upside down (this is the pic I will be referencing): There are only a few parts that need to be replaced for the programmer to work with the 2716, 25's, and this will not affect programming the other ROM's.īelow is a pic showing the unit, and marking the components to be replaced: OK, so you want your Advanced Willem EPROM Programmer to actually program the older chips? This can be achieved. The next post will describe what to do if you own one of these programmers (or are thinking about buying one). Once I figured out the differences, I modified my programmer to suit. There is some info on the web about modifying the Vpp (Programming Voltage) section of the PCB 3b unit to make it more reliable when programming the old chips, but the PCB45 and PCB50 from Sivava are a bit different. DAMN!Ĭonsidering I do a lot of work on older pinballs, it was starting to look like I was going to have to spend at least US$300 on a much more decent unit, just so I could program the older ROM's.īut, after doing some research, I realised that the Sivava Programmer was actually a modified Willem PCB 3b.
It does program everything from 2764 onwards without too much pain - once you know the tricks - but the 2716, 25's are pretty much un-programmable with this unit.
#Ramayan 2008 queen plus
The "Advanced Willem EPROM Programmer" PCB45 or PCB50 by Sivava ( is probably the most common one on eBay (seller: sivavath), and at around AU$50 plus shipping, it is not a bad price. Unfortunately, the 4.1 is no longer available new from the Willem site: but the 4.5 may also do the job fine (I have not tested this unit though).
#Ramayan 2008 queen update
Of the "official" Willem programmers, the version 4.1 is probably the best for programming ROM's for use in Pinball Machines from the early electronic ones right through until Stern changed their system to use a USB Flash Drive to update the software. furthermore, because the Willem programmers were/are an open project, there are many derivatives now available. There are a few sellers on eBay selling these units, but if you look closely, they are not the same. Considering the price of the Willem EPROM programmers, many people have bought them (including myself).
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