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not working issue 3Hi all, I received this mobo from ebay, after start i have this on screen [img]http://forest.no-ip.org/wos/issue3_01/20150728_135908.jpg[/img] …
... only 5v.
I change ztx650 and ztx 213 tr4 and ... -
Whites are yellow - 48k Issue 2I have a 48k issue 2 that appears to be working fine. I've replaced all but 2 of the electrolytic caps (mostly because the 2 were not in stock at my…
... try replace the two trimmers (TR1/2) - ZTX 313 I believe ... -
Display bandsHi all, I'm busy working on an issue 3 16k Spectrum I picked up on eBay. I've upped it to 48k and put a new membrane in. I noticed the display was…
... the capacitors, no difference, replaced TR1 and 2, no difference. Finally ... -
48K Issue 6a wobbly and flickering TV outputHi folks, Found an untested issue 6A Spec whilst tidying up and it had a warranty sticker on it from a past repair which seemed to be a socketed L…
... usual I've checked voltages, TR1/TR2, the left-hand caps ... -
bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…
... base of the transverter transistor ZTX650 to ground to disable the ... -
Repair ZX Spectrum +2 black issue 1Hi all, after a long time i will try to repair a ZX Spectrum +2 black i found the last days i know for sure that CPU is damaged (already repla…
... know transistors replacements for the TR1,TR2 and TR3? i have ... -
Issue with TV signal + Inductor Coil (16K Issue 2 Speccy)Hello guys, I just got a 16K Issue 2 Speccy from eBay. It was sold as not working so I knew there would be some work needed before it's working ag…
... . Today I replaced the original ZTX650 with ZTX651 (and did the ... -
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 would crash occasionally, tuning TR1/TR2 didn't affect the ... -
ZX Spectrum Issue 4S composite video fuzzy (horizontal blur)Dear people of WoS, Thank you very much for taking the time to read. I have an Issue 4S I recently acquired and planned to fix up as a gift for a…
Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…
... ... Needs a replacement for a ZTX650... So I bend a slightly ...blew up my 128i did it - damn. i accidentally reverted the polarity of the power power supply, so ended up with a blown 5v stabilizer, which i replaced, but there …
... OK. Check the transistor TR4 (ZTX650) at first. This is almost ... [/img]
I think that ZTX650 is very obsolete and it ...SPIN V0.2 Now Available[Standard CSS cut'n'paste message] Hi all! Well, again another update, but we think this one's well worth it. There's numerous additions and fixes,…
Have just downloaded this, looks good. I see you have gone for a non-standard Windows interface, any chance of adding a minimize button.
[ This Message was edited by: ZTX650 on 2002-08-06 20:41 ]Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.
... circuit and output through a ztx650 - this is often the weakest ...Ecstasy & AgonyWhile checking out the area around Chennai Central station on Sunday, I came across this crowded narrow road taken up entirely by roadside vendors se…
... the invertor circuit - usually the ZTX650 transistor is blown - but sometimes ...Broken ZX 48kHey all. I have acquired a broken ZX 48k. It looks in good condition - tried the membrane and it is working with my other 48k very well. When you tu…
... /> My experience is that the ZTX650 transistor that is responsible for ... -5V is faulty, replace the ZTX650. If the machine still doesn ...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 …
... , and lots of ZTX213 and ZTX650 transistors, so I'm well ...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 …
... -up...
Unfortunately, the ZTX650 isn't the hard one ...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 …
... , just change the ZTX213 and ZTX650 and then check for dead ...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 …
... game ever, the TR3, then TR1, then TR4, TR5 I found ...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 …
... doesnt feel as instinctive as TR1 or 2 on the psx ...rubber troublejus got 48K rubber speccy into my possesion, which was my first computer back then but only for few months before daddy decided to upgrade it for 48+…
... think). You can use a ZTX650/651 to replace it.128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... no -12V on MC1489N maybe ztx650 is dead? Does faulty -12V ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
No, the ZTX650 doesn't have anything to ... RAM. I have several spare ZTX650's if you want them ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
[QUOTE=DEATH]No, the ZTX650 doesn't have anything to ... RAM. I have several spare ZTX650's if you want them ...Spectrum Composite video connections?Is it possible to modify a standard 48K spectrum to give composite video output? In my experience i have found the quality of the picture out of the…
... caused by the TR2 and TR1 transistors gone bad (ZTX313) just ...Spectrum Composite video connections?Is it possible to modify a standard 48K spectrum to give composite video output? In my experience i have found the quality of the picture out of the…
... link - the info for the ZTX650 equivalent is wrong - the 650 ...Note to SpiranthoIan Whilst playing about with Frankenspec, I have discovered that the 41256 memory IC works as well as a 4164 (etc) in the upper RAM block of a 48K …
BA158 fast recovery diodes work in place of the BA 157.
ZTX650/651 works in place of ZTX450, TR7, Issue 3+
Ian, you have a PMArghhh no soundHi All Over the past few years I have bought a few old rubber keyed Spectrums to re-live those good old days. Thing is they have all been bought a…
... can be substituted for a ZTX650, available from Bowood Electronics for ...
