Service manuals, schematics, eproms for electrical technicians
EUROPEAN VALVE CROSS-REFERENCE CIRCA.1920-1930
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If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar european manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar european manual?
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EUROPEAN VALVE CIRCA. 19201930 CROSS REFERENCE CIRCA.1920 1930
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Relevant OTHER forum topics:
Keresem a TECDIS CD91501 LCD bekötési rajzát, vagy a hozzá vezető utat.
There is no service manual of the Yamaha KX-250, anyone? I have fixed the mechanism of this unit, replaced the capstan motor (bad quality shreeking one with a better one), replaced the belts and works perfectly fine. Perfect audio, everything works great. However after testing it many times I reassembled the unit and did another test. Some tick noise is present in the audio.
The tick noise is present when executing a function, for example REW (most worse of all), FF or PLAY (only a few spikes randomly), also when using the remote. It is not a problem of the mechanism (motor) or a ground issue or something like that, disconnected it and problem still exists. Maybe it has something to do with static electricity because I have used the unit without HEAD cables attached to the mainboard (head input pins floating) however the pre-amplification circuit is working fine except of the noise. There are two IC's in this circuit, UPC1330HA head selector and a LA3161 pre-amplifier.
The LA3161 is a 2-channel preamplifier that has a circuit to reject ripple. Is it possible this IC is damaged (because of a (static) spike) and because of that the ripple rejection is no longer working? When I replace this IC the problem is solved?
Any ideas or do have some people any experience with this or recognize the sound behaviour discription? Anyone who can point me into the right direction?
Many thanks for any reply.
The tick noise is present when executing a function, for example REW (most worse of all), FF or PLAY (only a few spikes randomly), also when using the remote. It is not a problem of the mechanism (motor) or a ground issue or something like that, disconnected it and problem still exists. Maybe it has something to do with static electricity because I have used the unit without HEAD cables attached to the mainboard (head input pins floating) however the pre-amplification circuit is working fine except of the noise. There are two IC's in this circuit, UPC1330HA head selector and a LA3161 pre-amplifier.
The LA3161 is a 2-channel preamplifier that has a circuit to reject ripple. Is it possible this IC is damaged (because of a (static) spike) and because of that the ripple rejection is no longer working? When I replace this IC the problem is solved?
Any ideas or do have some people any experience with this or recognize the sound behaviour discription? Anyone who can point me into the right direction?
Many thanks for any reply.
Sziasztok!
Egy volt osztálytársam ma megkeresett. Van neki Szentendrén egy Boderus kombi fali kazán, és az elektronikai panellel valami gondja van.
Elvállalná-e valaki ennek lapnak a javítását?
Üdv: formasu
Sziasztok!
A piacon vettem párszáz forintért egy sencor dvb-t vevőt.De semmi életjelet nem produkál a zöld leden kívül. Kikapcsolni sem lehet.Van itthon egy hyundai tipusú beltérim. Az alaplap egy és ugyan az,DH1687-ZC01-01. A feszek a mérési pontokon megegyeznek. Ha esetleg bootloader vagy szoftwer problémája lenne akkor megoldható jtag-al a javítása? Úgy látom vannak erre külön pontok a paneleken. Kiolvasható a jó készülékből és átírható a rosszba? Nem vagyok jártas ezen a téren.
Köszönök minden hozzászólást!
Üdv! CorMyuS