Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Bullet VM30 combo, GDR from 1990

But looks more 1970s .
Anyone familiar with strange transistor. capacitor and these IC markings
such as
"X2 080" ,"X8 761" ,"TL 761" (not opto) ,"X8 082" ,"X6 081" ,"X6 082" ,
V4007D (not CMOS 4000)

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



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Default Bullet VM30 combo, GDR from 1990


On Sun, 13 Jul 2008 22:01:59 +0100, "N_Cook" wrote:

Anyone familiar with strange transistor. capacitor and these IC markings
such as
"X2 080" ,"X8 761" ,"TL 761" (not opto) ,"X8 082" ,"X6 081" ,"X6 082" ,
V4007D (not CMOS 4000)


Found in an old VEB Kombinat Mikroelektronik databook:

B080D = TL080
B081D = TL081
B082D = TL082
B761D = TAA761
V4007D = CD4007UBE

Best regards

Piotr

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Default Bullet VM30 combo, GDR from 1990

Piotr Piatek wrote in message
...

On Sun, 13 Jul 2008 22:01:59 +0100, "N_Cook" wrote:

Anyone familiar with strange transistor. capacitor and these IC

markings
such as
"X2 080" ,"X8 761" ,"TL 761" (not opto) ,"X8 082" ,"X6 081" ,"X6 082" ,
V4007D (not CMOS 4000)


Found in an old VEB Kombinat Mikroelektronik databook:

B080D = TL080
B081D = TL081
B082D = TL082
B761D = TAA761
V4007D = CD4007UBE

Best regards

Piotr


Thanks for that, I'd only assumed there was no use for 6 off CMOS inverter
packs, assuming they were more likely to be quad opamp packs.

Do you know why there are all thes +digit numbers on the ICs transistors and
electrolytics ?
the 2 main TO3 output Tesla devices are marked KD607 but also X69321


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



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Default Bullet VM30 combo, GDR from 1990

thes +digit

should read

these X + digit


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Default Bullet VM30 combo, GDR from 1990


On Mon, 14 Jul 2008 10:28:07 +0100, "N_Cook" wrote:

Do you know why there are all thes +digit numbers on the ICs transistors and
electrolytics ?
the 2 main TO3 output Tesla devices are marked KD607 but also X69321


Sorry, I don't know. Perhaps they are date codes.

Piotr



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Default Bullet VM30 combo, GDR from 1990

N_Cook wrote:

Do you know why there are all thes +digit numbers on the ICs transistors and
electrolytics ?


No idea about the electrolytics. On the semiconductors, it's the marking
for production month and year (but I don't have the code handy).

the 2 main TO3 output Tesla devices are marked KD607 but also X69321


The KD607 is a Czech npn power transistor, 10 A, 80 V, 70 W, designed
for AF power amps.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL

http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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Default Bullet VM30 combo, GDR from 1990

Joerg Wunsch wrote in message
...
N_Cook wrote:

Do you know why there are all thes +digit numbers on the ICs transistors

and
electrolytics ?


No idea about the electrolytics. On the semiconductors, it's the marking
for production month and year (but I don't have the code handy).

the 2 main TO3 output Tesla devices are marked KD607 but also X69321


The KD607 is a Czech npn power transistor, 10 A, 80 V, 70 W, designed
for AF power amps.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL

http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



I only have one German data book , ECA from 1987 and it does not list the
final uncertainty.
An E-line size or varicap type package of a diode marked 32 VV or 32 YV, 32
volt zener ?

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


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Default Bullet VM30 combo, GDR from 1990

N_Cook wrote:

An E-line size or varicap type package of a diode marked 32 VV or 32
YV, 32 volt zener ?


Any chance to take a photo? My guess is it's an SAY32 which is a simple
silicon small-signal diode.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL

http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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