Unrainer modification/fix for ZX Spectrum 128K ‘toastrack’ / +2 (grey model)

Unrainer fix to solve ‘raining effect’ with all ZX Spectrum 128K toastracks / grey +2.

What is it needed for?

A lot of (often Eastern-European) games and demos show the so-called ‘raining-effect’, which is caused by a glitch in one of the parts in the ZX Spectrum 128K ‘toastrack’ and the grey ZX Spectrum +2 models (not the black +2A or +3).
See the example pictures below.

Velesoft developed an upgrade to get rid of this problem – more information can be found at: https://velesoft.speccy.cz/zx/umbrella/umbrella.htm.

The replacement ‘unrainer’ chip

These chips have been programmed and tested.

You will have to remove the current PAL or HAL chip first – some (de)soldering skills are required for that.
A 20 pin IC socket is included – this is optional: soldering the replacement chip to the mainboard is fine as well.

One wire is needed as well – it will connect to the chip and the Z80 CPU.
I will include the wire with the package and add a small manual that shows where to connect the wire.

Manual

Read the manual here (click).
It’s not included with the package to save on shipment costs, for your benefit.

Mind the orientation of the chip!

The chips notch is aimed:

  • Upwards in a toastrack
  • Downwards in a +2

See the pictures of the chip locations below.

 

Before:

After:

 

Chip locations:

B-grade ZX Spectrum Plus case incl. new membrane #10

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with brand new membrane
– Top part cleaned
– Comes with all screws (including the ones for the mainboard)
– Comes with original rubber feet (will come with 4, not 3 as on the photo)

Cons:

– No plastic springs and feet
– No reset switch
– Hole in bottom shell
– Top is somewhat of a gloss surface, probably someone cleaned it with some stuff that caused it

Offer is subject to placement errors.

 

 

 

B-grade ZX Spectrum Plus case incl. new membrane #8

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with plastic springs and feet (not on photo)
– Comes with brand new membrane
– Cleaned
– Comes with all screws (including the ones for the mainboard)
– Comes with original reset switch (not on photo)
– Comes with original rubber feet (non-original)

Cons:

– One filled hole on bottom shell at back
– Minor scratches on top part

 

Offer is subject to placement errors.

 

B-grade ZX Spectrum Plus case incl. new membrane #7

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with brand new membrane
– Top part cleaned
– Comes with all screws (including the ones for the mainboard)

Cons:

– Has non original rubber feet (hard ones)
– Somewhat polished area right next to Enter key
– Several holes in the bottom shell
– No plastic springs and feet
– No reset switch
– Scratches on top part, right front

Offer is subject to placement errors.

 

 

B-grade ZX Spectrum Plus case incl. new membrane #6

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with plastic springs and feet (not on photo)
– Comes with brand new membrane
– Cleaned top part
– Comes with all screws (including the ones for the mainboard)
– Comes with original reset switch (not on photo)
– Comes with original rubber feet (non-original)

Cons:

– Minor scratch

 

Offer is subject to placement errors.

 

B-grade ZX Spectrum Plus case incl. new membrane #5

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with brand new membrane
– Top part cleaned
– Comes with all screws (including the ones for the mainboard)

Cons:

– No plastic springs and feet
– No reset switch
– Has replacement rubber feet (non-original)
– Holes in the bottom shell
– Top is somewhat of a gloss surface, probably someone cleaned it with some stuff that caused it

Offer is subject to placement errors.

 

 

B-grade ZX Spectrum Plus case incl. new membrane #4

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with brand new membrane
– Cleaned
– Comes with all screws (including the ones for the mainboard)

Cons:

– No plastic springs and feet
– Has a filled up hole in the top
– Has replacement rubber feet (non-original)
– Hole for on/off switch
– No reset switch

Offer is subject to placement errors.

 

 

 

 

 

B-grade ZX Spectrum Plus case incl. new membrane #3

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with plastic springs and feet
– Comes with brand new membrane
– Top part cleaned
– Comes with all screws (including the ones for the mainboard)
– Comes with original reset switch

Cons:

– Has replacement rubber feet (non-original)
– Holes in the bottom shell
– Top is somewhat of a gloss surface, probably someone cleaned it with some stuff that caused it

Offer is subject to placement errors.

 

 

 

B-grade ZX Spectrum Plus case incl. new membrane #1

ZX Spectrum Plus case + new membrane

This is a b-grade case, which means it’s not perfect – details below.

You can use this for an original ZX Spectrum mainboard, or the Harlequin rev G (48K) and rev 2D (128K) kit.

Pros:

– Comes with plastic springs and feet (not on photo)
– Comes with brand new membrane
– Cleaned
– Comes with all screws (including the ones for the mainboard)
– Comes with original reset switch (not on photo)

Cons:

– Has replacement rubber feet (non-original)
– 2 cutouts on left side of bottom
– Top is somewhat of a gloss surface, probably someone cleaned it with some stuff that caused it
– Parts next to Enter-key ‘polished’ because of use probably
– Minor scratches right of the Symbol Shift key

 

Offer is subject to placement errors.