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  • zx spectrum without TR6 (ZTX313)Hi is it possible that a zx spectrum 48 issue 2 works without TR6 (ZTX313)? Should be very interesting.

    Hi
    is it possible that a zx spectrum 48 issue 2 works without TR6 (ZTX313)?
    Should be very interesting.
    landex landex October 2013 Hardware
  • Spectrum Issue 2 - TR6 ReplacementI've just got my hands on an Issue 2 ZX Spectrum, that needed some repairs. The picture quality after doing a composite modification was pretty shodd…

    ... one of the legs on TR6 (the transistor that sits awkwardly ... up for me exactly what TR6 is doing. I Googled it ...
    retrogamemart retrogamemart August 2014 Hardware
  • Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…

    ... at TR1, TR2, TR3 and TR6 on an issue 3B board ...
    DEATH DEATH December 2006 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... left of the ULA chip (tr6/7 ???? i don't remember ...
    gtsamour gtsamour March 2007 Hardware
  • 48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …

    ... the problem as "Check the TR6". Now on loking at it ... problems are symtoms of the TR6 resetting the machine and once ... 2N2369 to replace the ZTX313 (TR6) however while I wait for ...
    hedge hedge January 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... transistor mounted on the fly (TR6 ?) on z80 has a broken ... soldering : (
    Presuming that the TR6 (ZTX313) in not easy replaceable ... resistor (4K7) alternatively used to TR6 ?
    What happens if I ...
    Cignale Cignale July 2010 Hardware
  • Intermittent reset on 48K (issue 4S)I'be been fighting an intermittent selfreset the whole day. Changed ULA - did not help. Tested TR6 as i could and compared the reading with another…

    ... not help.

    Tested TR6 as i could and compared ... a brilliant idea to put TR6 couple of millimeters away under ...
    ArtemKuchin ArtemKuchin May 2012 Hardware
  • Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…

    ... /> 5. Failure of TR6

    Now TR6 in some earlier boards ... never fixed inside the ULA - TR6 instead became part of the ... enormous current will flow through TR6 and will probably kill it ... the transistor!) Now that the TR6 hypothesis was strong enough to ...
    Winston Winston December 2013 Hardware
  • 48k not startingHi team, I have 2 48k's, one works (Issue 4s), one doesn't (Issue 4a). The non-working one appears to start, but not finish the RAM test. The pape…

    ... to replace both TR3 and TR6...

    Any other suggestions ...
    neillsun neillsun September 2015 Hardware
  • Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …

    ... /O was working).
    - Tested TR6 in-circuit: no faults apparent ...
    Zorn Zorn February 2016 Hardware
  • ZX Diagnostics v0.33 releasedHi everyone, I'm pleased to announce the release of v0.33 of zx-diagnostics. This release contains the following changes: - ULATest: Detect …

    ... show ULA type, and new TR6 check
    - ULATest: New tape ...
    balford balford April 2016 Hardware
  • Spectrum +2 (grey): Mod- and operation- related advices needed.Dear Sirs and Ladies, Please welcome a newbie to the “World of Spectrum” (both to the forum and, well, metaphorically). I’ve recently purchased a…

    ... have to reverse TR5 and TR6 too?

    And last ...
    Volo Volo September 2016 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…

    ... /> Is it safe to assume TR6 is bad?
    PSU I ...
    Shockwav3 Shockwav3 December 2017 Hardware
  • Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …

    ... , anyone looking for TR4/TR5/TR6:
    [url="http://www.tubesonline ...
    Spirantho Spirantho May 2005 Sinclair Miscellaneous
  • Tomb Raider - LegendSeven and a half hours. Seven and a half bloody hours. Seven hours and a tad over thirty mins TOTAL. Great Graphics. Great Story. A GRAND TOTAL …

    ... found a waste of time. TR6 goes down in my book ...
    Ælita Ælita April 2006 Chit chat
  • Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…

    Hi,

    I have a issue 3B that has:

    MPS 2369 in TR1, TR2, TR3 and TR6.

    By the looks of the solders, they weren't replaced. They were placed during factory production.

    Hope that helps.
    odious odious May 2007 Hardware
  • Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…

    ... in TR1, TR2, TR3 and TR6.

    By the looks ...
    DEATH DEATH May 2007 Hardware
  • Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…

    ZTX 312 at TR1, TR2, TR3 and TR6 on an issue 3B board.
    odious odious October 2007 Hardware
  • sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …

    ... and the +5V regulated supply. TR6 is used to prevent the ...
    Phu Phu February 2008 Hardware
  • sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …

    ... problem?

    i check tr6 ... on first leg where is ...
    gorski gorski February 2008 Hardware
  • Issue 2 Board - CPU 'Patch'I've been wondering why my issue 2 board has been kicking out this signal when powered up... [IMG]http://www.drumfu.com/ResizedDuffIssue2.jpg[/IMG] …

    ... ][I]Issue 2 Spectrums have TR6 soldered across the Z80A chip ... . In Issue 3 Spectrums, transistor TR6 has been incorporated on the ... ULA have either a transistor (TR6) or diode/resistor modification (see ...
    jp jp September 2008 Hardware
  • Issue 2 Board - CPU 'Patch'I've been wondering why my issue 2 board has been kicking out this signal when powered up... [IMG]http://www.drumfu.com/ResizedDuffIssue2.jpg[/IMG] …

    I've had a bit more time to think about this, and I don't need the patch. On my board TR6 is mounted near C57. I've replaced TR6 (ZTX313) with a BC238 and the same fault is present. What's next?

    Cheers
    jp jp September 2008 Hardware
  • Tomb Raider UnderworldMy review of Tomb Raider - Underworld. It's crap. OH, it's very pretty... and full of bugs and glitches..... and its crap. Four Days. Four poxy d…

    Is it at least less bug-ridden than TR6: AOD ? :)
    GOC GOC November 2008 Chit chat
  • Tomb Raider UnderworldMy review of Tomb Raider - Underworld. It's crap. OH, it's very pretty... and full of bugs and glitches..... and its crap. Four Days. Four poxy d…

    ... least less bug-ridden than TR6: AOD ? :)[/QUOTE]

    I ...
    ZX Beccy ZX Beccy November 2008 Chit chat
  • 48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …

    ... home screen:

    - Replaced TR6 system worked for approx 45 ...
    hedge hedge January 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... issue3 models and only called TR6 there. I have no recollection ...
    roko roko July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    What happens if you replace the old type ULA found on an issue 2 boards (5c112) with the later one? Is then TR6 necessary in this case too?
    gtsamour gtsamour July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... and.... the z80 presents no TR6 ! There are only remnants of ... of IC1.
    Transistor mod : TR6 (ZTX313) connected as follows:
    TR6 patch, am I wrong ?
    Cignale Cignale July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... and.... the z80 presents no TR6 ! There are only remnants of ... of IC1.
    Transistor mod : TR6 (ZTX313) connected as follows:
    TR6 patch. Am I wrong ?
    Cignale Cignale July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... or later(!!) is used, and TR6 is present there. This transistor ... then IMHO means that the TR6 'solution' should not be seen ...
    roko roko July 2010 Hardware
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  • zx spectrum without TR6 (ZTX313)Hi<br /> is it possible that a zx spectrum 48 issue 2 works without TR6 (ZTX313)?<br /> Should be very interesting.
  • Spectrum Issue 2 - TR6 ReplacementI've just got my hands on an Issue 2 ZX Spectrum, that needed some repairs. The picture quality after doing a composite modification was pretty shodd…

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