The calculator no longer turns on despite new batteries
Does not turn on despite new batteries. Have been told there is a chip which needs replacing? Have had other calculators repaired that way, but this one only lasted 6 months. Have had repairs done this way 6 times before but would prefer if there is a method which is more permanent. The HP 41 came out in 1980 and have 6 in my possession. Over time the calculaters degenerate and can not be activated. Presentlt only 1 is working and it is showing signs of 'pcking it in'. In my opinion the newer models are not a patch on the HP41, HP41C, HP41CV or the HP41CX.
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These devices contain surface mount components that require a reflow station to remove / affix.
You may be able to contact a company that works on pcb's to repair it, however if the product is at end of life, the chips used may no longer be available, and if any of the chips have custom programming from the factory, these chips will not be fixable.
You may need to look into a new replacement card. ATTO is still in business and can probably offer you a comparable replacement.
The video chip is defective. Since this is an onboard chip, part of the motherboard, it means that the entire motherboard will have to be replaced.
This is an very old model, no longer sold, so it's time for a new pc
Make sure you have a 200-266 MHz DDR RAM. You should also have two RAM slots, try using both of them (two sticks of RAM that equals what you want it to), also make sure you haven't gone over the 2GB max, and make sure they are secured in the slots.
It sounds like the CMOS battery(s) are dead. They hold the most recent boot information including current date. Assuming both machines are on the older side, it's entirely possible the CMOS batteries no longer are providing enough power to retain this information.
You need to google the exact model to find out the memory you need. Unhook the power and turn over the laptop. Remove the battery as well. i can't find the manual for that model but there should be a small door probably with a couple screws holding it closed. remove the screws to access the memory.
On each side of the memory chip you will see tabs. GENTLY move them away from the chip. it should pop up on an angle. remove the memory and repeat the same step if there are two slots and you intend to replace both chips.
When you remove the memory note where the slot on the bottom of the memory chip is. Replace the bottom chip first by gently sliding it into the connector. When it is seated push down on the chip gently till it clicks into place. repeat the same with the second memory chip.
After you are done put the cover back on with the screws.
Turn over the laptop and reboot and watch to see that the memory has been recognized.
Most if not all laptop manufacturer also sell batteries for the model they carry/sell. You need to go the the website of your laptop manufacturer and look for an appropriate battery to your specific laptop model.
Alternately, there are available aftermarket/generic/replacement batteries that will also fit your laptop. You can try here, here or here. Additionally, there are some versions that has a higher capacity which translates to longer usage time.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.