Fixing РКСБ-104 - Voltcraft HS-036 Geiger counter (replacement for ИЖЦ-3 LCD display)

Geiger counter RKSB-104 was produced in Belarus and exported under Voltcraft HS-036 brand to Germany. I bought one damaged counter on ebay. The defect is typical for this model: LCD display showing a huge black stain, everything else worked fine but the previous owner has removed the display.
I tried to purchase a new ИЖЦ-3 display but I failed to find a supplier, I decided then to reverse engineer the PCB and figure out if any modern LCD can be fitted into this device. I used this circuit diagram: http://c4r0.elektroda.eu/_hv/xrays/count2_sch.jpg

50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32	31	30	29	28	27	26
R1	BP	R1	G1	F1	A1	B1	G2	F2	A2	B2	G3	F3	A3	B3	G4	F4	A4	B4	BP	BP	BP	BP	BP	BP
Original RKSB-104 display pinout
BP	BP	E1	D1	C1	BP	E2	D2	C2	BP	E3	D3	C3	BP	E4	D4	C4	BP	BP	BP	R2	BP	R3	BP	BP
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25

RKSB-104 LCD pinout, BP is a backplane, R1, R2 and R3 are some symbols which I couldn't identify based on a circuit diagram.

I suppose that DE119 LCD can be used to fix other similar devices for example for example РКС-107 or Bella (DBG-01N)

I prepared a small PCB which is an adapter between a original PCB and a new display

Adapter PCB circuit diagram

Adapter PCB layout

New LCD mounted on the adapter PCB

Display before fixing

The new display and adapter mounted on the counter PCB

The counter with a new display