Service manuals, schematics, eproms for electrical technicians
BK PRECISION 1804A FREQUENCY COUNTERS PART LIST MANUAL SCHEMATICS
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547.9 KB
547.9 KB
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Category
METER
SERVICE MANUAL
METER
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Looking for similar bk manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar bk manual?
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BK PRECISION FREQUENCY COUNTERS LIST SCHEMATICS 1804A 1804
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Relevant METER forum topics:
Ave Tanyalakók!
Tegnap szert sikerült tennem egy Fok-Gyem TR-9253/A tápegységre. Belülről elég eredeti állapotban van csupán pár kondenzátor lett benne cserélve a gyártása óta. Az itt fent lévő TR-9253 rajzzal köszönő viszonyvan sincsen!! A hibáját 5 perc alatt sikerült orvosolnom :) . De a tartós zárlat már két tranzisztort megölt (2n3773)! Egy-két dolgot furcsállok a gépezetben:
1: 1db 2N3055-tel van megoldva a szabályozás
2: A Graetz-et alkotó diódák minimális hűtéssel КД202Б (KD202B) Kolya kedvéért, hátha így be tudja azonosítani :)
3: КД202Б dióda sorban a kimenő árammal
4: Nem akarnám lerajzolni, de a szükség nagy úr :)
Sziasztok, a fent említett műszerem tönkrement és rajz nélkül nem bírom javítani(restaurálni). A netten csak fizetős oldalon leltem róla infót meg egy radiomuseumba.
Sziasztok!
A fent nevezett oszcilloszkópom hálózati trafója az imént munka közben megszakadt (primer). Első körben kérdezlek titeket, hogy nincs-e valakinek ilyen hibás, vagy bontott gépe amiben jó a trafó. Így gyorsabb lenne mint a tekercselés.
Köszönettel Karesz.
Settings are set and known good function generator being used for testing. Wave not able to fix on the screen. Suspect triggering.
Visual inspection complete with no discoloration of any part. Problem exists for both channel 1 and 2.
Can't find exact service manual.
Visual inspection complete with no discoloration of any part. Problem exists for both channel 1 and 2.
Can't find exact service manual.
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