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<1…891011121314…34>
  • ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …

    ... />
    3) No heatsink

    4) Heatsink hole is used for ... choice)

    8)Socketed ULA with lever . Where do you ...
    harriusherbartio harriusherbartio May 2017 Hardware
  • ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …

    ... . The main differences are in ULA's. With the iss2 board ... and any 5C112E ULA you will need an additional ... ROM chip manufacturers. Under the heatsink are the H-N ROM ...
    1024MAK 1024MAK May 2017 Hardware
  • ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …

    ... "one socket" areas like the ULA (if a non turned pin ... think the hole from the heatsink could be used for a ... cover over the Traco . The heatsink set up is different on ...
    harriusherbartio harriusherbartio July 2017 Hardware
  • ZX Spectrum 48K it only shows colored barsHello, I'm new to the forum and I need help with a ZX Spectrum 48K which I bought recently unfortunately defective. I want to mention that before t…

    ... 4A, a later generation ULA chip was in use, ... grey) shows that the ULA is receiving instructions from ... (also a function of the ULA).

    Do ... point (for example, the heatsink of the 7805 voltage ... probe, test each of the ULA following pins.

    1024MAK 1024MAK August 2017 Hardware
  • Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …

    ... So I reuse the old heatsink (trimmed off a bit ... with the retained old heatsink . It only takes ... the way open for ULA cooling to be attached ... end of the heatsink (as well as the ULA).

    heatsink authenticity .

    harriusherbartio harriusherbartio September 2017 Hardware
  • Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…

    ... , all of which have working ULA's (plus one with a ... dead ULA and one with a modern ... in err, place of a ULA)...

    ZX80's, ZX81 ... more, will result in the heatsink for the 7805 voltage regulator ...
    1024MAK 1024MAK October 2017 Hardware
  • Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…

    ... , all of which have working ULA's (plus one with a ... dead ULA and one with a modern ... in err, place of a ULA)...[/quote]
    Is that "modern ... more, will result in the heatsink for the 7805 voltage regulator ...
    The Mighty Dopethrone The Mighty Dopethrone October 2017 Hardware
  • ZX Spectrum Issue 2 - 12V badHey there, I'm currently attempting to fix a ZX Spectrum issue 2 that I recieved. Overall the machine was generally working when I recieved it, bu…

    ... and removed the heatsink. Now just the ULA needs a heatsink and the ...
    Shockwav3 Shockwav3 December 2017 Hardware
  • Broken Issue 2 - likely culpritsI've just got hold of an issue 2 spectrum with an interesting layout (heatsink is vertical and goes down to the speaker, some variable resistors and …

    It might heat up a bit slower with a regulated PSU but it still get hot (the whole heatsink gets hot to the touch).

    One bit of good news is that I swapped in a known working ULA and get the same crash so it doesn't appear to be a broken ULA.
    dave18 dave18 March 2018 Hardware
  • +2 crashes upon pressing some keysYears ago I purchased off ebay a mint condition, Dixons special offer boxed UK-made issue 1 +2. I did not use it so much until recently however, focu…

    ... related to the heatsink placed on IC 14 (the ULA), which stands ...
    Alessandro Grussu Alessandro Grussu April 2018 Hardware
  • +2 crashes upon pressing some keysYears ago I purchased off ebay a mint condition, Dixons special offer boxed UK-made issue 1 +2. I did not use it so much until recently however, focu…

    ... lead goes.

    Silicon heatsink paste is recommended. The adhesive ... idea to clean the old heatsink paste off and then ... of the chip and the heatsink before reassembling. You only ... br />
    With the ULA, the metal heatsink parts fit together in ...
    1024MAK 1024MAK April 2018 Hardware
  • +2 crashes upon pressing some keysYears ago I purchased off ebay a mint condition, Dixons special offer boxed UK-made issue 1 +2. I did not use it so much until recently however, focu…

    ... /> Further examinations showed that the heatsink is firmly kept in place ... from the fact that the ULA and RAM seem to be ...
    Alessandro Grussu Alessandro Grussu April 2018 Hardware
  • Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…

    ... room to add a heatsink to the the ULA without needing to ... Also, the silver aluminium clipped heatsink on the +2 is mostly ... planning to remove the entire heatsink assembly and replace it ... The thermal paste / silicon grease / heatsink compound is there to fill ...
    1024MAK 1024MAK May 2019 Hardware
  • What % of WOSSERS use "old school" tape loading when playing their Speccy games.My guess is .000000001% ( but I might be slightly out on this! ) Do people still enjoy doing it "the old way"?

    ... is needed, as the CPU, ULA, ROM, upper RAM and the ... . Hence the need for a heatsink to get rid of the ... the 7805 and it’s heatsink and solder in a nice ...
    1024MAK 1024MAK September 2019 Chit chat
  • Repairs and Reparing.Hi All, Just finished resurrecting an Issue 3A board. Had black lines, so replaced the lower 16K RAM chips, Amazed they just cost a couple of doll…

    ... DRAM chips.

    The ULA, Z80A, Mask ROM, and the ... ) can fail. These, like the ULA are long obsolete. But replacement ... any near or under the heatsink. This may help reduce the ...
    1024MAK 1024MAK February 2021 Hardware
  • Two new spectrums arrived. One no video.Got a +2 and a Toastrack arrived today. Toastrack was actually in good condition, little wear, though a little dirty. Worked well on first power up, …

    ... works well... A little heatsink compound under the ULA heatsink replaced... And now ...
    cj7hawk cj7hawk September 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... the socket and solder the ULA to the PCB to have ... to be induced over the heatsink anyway so if I owned ... !)

    [1] Soldering the ULA into the board probably does ... from the chip than a heatsink glued to the chip does ...
    guesser guesser October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... no a heatsink is not required on the ULA. How many ... for [b]ANY[/b] ULA in any of their ... I know Amstrad did). ULA chips use a technology that ... a heatsink may help extend the life of a ULA chip ... , believe that fitting a heatsink to a plastic encapsulated chip ...
    1024MAK 1024MAK October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... for [b]ANY[/b] ULA in any of their computers ... ULA chip failure was a big issue, and fitting a heatsink ... fitted heatsinks to the ULA chips? I don’t ... application where a heatsink is fitted to a Ferranti ULA?
    ... but don’t need a heatsink. Not to be confused ...
    1024MAK 1024MAK October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... bond a thermocouple to the ULA somehow (since the case temperature ... temp) with and without a heatsink, and log and graph temperature ... you say once the chip, heatsink, and unventilated case all reach ... PCB to use a heatsink, the no-heatsink test should be made ...
    guesser guesser October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... a heat sink on the ULA and reading your replies has ... believe they have the same ULA as the +2 and the ... toast rack not have a heatsink then ? maybe not relevant but ...
    mark8bit mark8bit October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... bond a thermocouple to the ULA somehow (since the case ... to use a heatsink, the no-heatsink test should be ... conclusively prove that their last ULA "DEATH" was due ... caused instant karma re the ULA on powerup ) which ... in my opinion. The ULA and the computer it' ...
    moggy moggy October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... much information about this ULA technology. But it’s ... aluminium heatsink that Amstrad used on the ULA in the ... . On these, the heatsink has been found not ... we know which Ferranti ULA technology/series are used ... Hence don’t need a heatsink.

    [b ...
    1024MAK 1024MAK October 2021 Hardware
  • Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…

    ... is slower because of the ULA)?

    Or must I ...
    Anders Anders September 2001 Emulators
  • SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…

    ... and drop support.
    Added ULA Snow effect, and Floating bus ...
    Dunny Dunny May 2002 Emulators
  • ZX Spectrum Community ContributionThere is a new interface named MB03 under development(IDE,Flashcard reader,2MB RAM,etc).You can see it on Sintech website. The price of this interfa…

    ... a integrated circuit (such as ULA). But to invent such an ...
    Anestis Anestis July 2002 Sinclair Miscellaneous
  • Loads of speccy bits for auction inc. a boxed rubber keyed and 128k heatsinkCheck it out, only a day to go on some of the stuff!!! [url="http://cgi6.ebay.co.uk/aw-cgi/eBayISAPI.dll?ViewSellersOtherItems&userid=leesbriggs&com…

    Check it out, only a day to go on some of the stuff!!!

    [url="http://cgi6.ebay.co.uk/aw-cgi/eBayISAPI.dll?ViewSellersOtherItems&userid=leesbriggs&completed=0&sort=2&since=-1&include=0&page=1&rows=25"]http://cgi6.ebay ...
    leesbriggs leesbriggs August 2002 Sales
  • Spectrum 128+ production periodMy favourite version of the Speccy is the 128, the heatsink version, and I'm wondering when mine was made. I got it Xmas 1986 (after seeing the +2 on…

    ... Speccy is the 128, the heatsink version, and I'm wondering ...
    Spector Spector September 2002 Sinclair Miscellaneous
  • ZX Spin 0.4 available for Download.Standard Cut-n-Paste from the CSS post: If all goes well, I'll upload it to WOS on monday. ----------------------------------------- Okay, it's th…

    ... .
    Fixed a bug with ULA Snow and a reset - also ...
    Dunny Dunny November 2002 Emulators
  • has anyone converted an early speccy to drive a monitor ?sorry if this is the wrong forum, but there doesn't seem to be a hardware one, per se. I've been looking through the schematics a bit today - it see…

    ... the main restriction is the ULA - if one from a 128 ...
    GP GP December 2002 Sinclair Miscellaneous
<1…891011121314…34>

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