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Firmware updating on Epson T50 and P50 as transformation of a printer in L800

In this article we want to show you how to resolder the chip on the card in the Epson printers 

Rule number one - the printer must be ALREADY PASS INITIALIZATION!  Do not solder the absolutely new printer.

The chips

R290,T50,T59,P50,P59 and others…  We show you all soldering on an example on the Epson T50. 

You've disassembled the printer and got to the board (Figure 1)

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Figure 1

You will work with the chip (Figure 2)

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Figure 2

Warms chip across its area (Figure 3)

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Figure 3

Heat the foot of the chip in the one side, at the same time raise this edge (Figure 4)

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Figure 4

Also do this with another side and put the chip aside (Figure 5, 6, 7)

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Figure 5

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Figure 6

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Figure 7

The tracks must be restored. For this you need a new solder spread along the tracks (Figure 8).

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Figure 8

As a result, you should get the straight track without connecting with each other (рисунок 9).

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Figure 9

Put the chip on it place, align it (Figure 10).  The heat gun set on a small stream of air, snug down one side (Figure 11).

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Figure 10

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Figure 11

Once you snug down one side, you need to increase the airflow and begin to solder while pressing the chip

(Figure 12). The same way you need to solder another side. 

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Figure 12

As a result, you should get this (Figure 13).

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Figure 13

Please note that the soldering need to be accurate and the paths have been separated!

Please note that the ribbon cable that goes to the CSIC hasn't been connected!

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