VOGONS


First post, by bjwil1991

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Rank l33t
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l33t

Yesterday, I received a package from Digi-Key with the items that I purchased on Friday:

4x 22uF 6.3V tantalum capacitors (SMD)
10x 0 Ohm resistors (too small)
2x 0 Ohm resistors (too darn small)
2x 3.3V Fixed Voltage Regulators
2x Voltage Regulator mounting kits
2x CR1220/BR1220 battery holders (one is on the board and accidentally cut the legs off since I thought it would touch the bare metal on the case, and I was wrong)
5x 128Kb 28-pin DIP 12ns cache chips (not working since the board only supports 20ns and 15ns SRAM chips).

Did the modifications on my Packard Bell PB450 motherboard (Packard Bell Pack-Mate 28 Plus), however, I didn't solder the battery holder very well and accidentally trimmed the legs off. Good news is, I bought two of them, same thing with the capacitors, fixed voltage regulators, and the VRM mounting kit. As also seen in this forum: Packard bell PB450 repair / mods / upgrade

Voltage regulator mod (cleaned the rest of the flux off, mostly after the picture was taken):

bEcGjFKm.jpg

Battery holder (will fix):

mAk9WDdm.jpg

Gallery: https://imgur.com/gallery/LBoMgt2

Granted my soldering isn't that great, but, it has improved, and thankfully, I still have a ton of flux left and a few wrapped up solder braid, which did get the old solder off in order for me to install the voltage regulator.

The battery holder that's installed got a lot of the flux cleaning chemical on there, so I'm going to replace it with the spare I bought and the system says the battery is dead (I'll check the battery later on to see if it went kaput), test the voltage regulator with a multimeter to make sure it's getting adequate voltage across the board, and purchase a DX4-100 processor (either Intel or AMD) to test it with to see if I need to make adjustments, or purchase a DX5-133 (Kingston Turbochip).

I give credit to ahtoh for this wonderful project: Packard bell PB450 repair / mods / upgrade

Soldering in the capacitors were somewhat painful, but, I used pliers to hold the cap, put some flux on the solder points on both the motherboard and capacitors, put a smidge of solder on the capacitors, soldered them onto the motherboard with the pliers holding the caps down with one hand and the soldering iron with the other hand.

I will take better pictures as I didn't realize I had excess flux on the board, but, I did clean most of it off as there is some left on the board, but, not as much as I thought.

Edit: dummy me forgot to check the battery pin header to see if the jumper was presently on pins 3-4, and it wasn't. I added the jumper on there and it's keeping the settings, and I also changed the battery holder with the spare one I have.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser