Stacked 4619/4053 chips

[1Hillbilly]

This was made up for powersynch unlockers but can be used on others.

[oldcrow]

i like this mod. my question, does the pot settings remain at 2.2k for both chips? i currently have a 1k pot...but i can get a 5k to replace it with...

i found what i was looking for. all you have to do...is read before you ask a question...so i going to sit in the corner for awhile....

[1Hillbilly]

No, the pot settings were never actually at 2.2k. rev 103-105 uses the 4053 chips and a pot setting somewhere around 30 ohms. 106-1088 uses 4619 and a pot setting of 120 -150 ohms. It varies with each pc/loader setup.

[Freedom First!]

Has anybody attempted to do this on a green board T911, which has the chips surface mounted? It would seem that it could be done, but it would require a VERY steady hand, a good lighted magnifier, and extreme care in lifting pin 6 on both chips. I'd like to give it a whirl, but I don't see where pin 6 on both of the "stock" 4053 chips are connected on the T911.

[tigerrudes]

does anybody have a step by step like this one for a t911 rev b red board, thank you.

[1Hillbilly]

I think the pad for pin 6 uses a pass through to the bottom of the board. You may have to run a wire from beneath. I'll look at it closer. I have a T911 with all of the components removed.

[vagabundo]

take from back of the board, all are the sabe , if you dont find in fron , just use fron yhe back, easy, i mede easy on my t911 green board, blue case

[dmi2000]

What if I just remove 4053 from green board T911 and pleased 4619 instead?
What do we need 4053 for?

[1Hillbilly]

Sometimes the 4053 will open the older revisions faster and more efficiently than the 4619