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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 32
Bush2857NTXBlank rasterNo 12v supply to tuner - R327 2R2 o/c14-09-04
Bush2857NTXBlank raster - sound okR436 6R8 hi res14-09-04

Bush2857NTXBlank raster - sound ok12v to IC397 & 304 low - R435 0R68 1w o/c14-09-04
Bush2857NTXBlank screen & no controls5v supply drops to 3.4v out of st/by - IC103 faulty14-09-04
Bush2857NTXC926 blown/smoking - HT unstableC908 & C91014-09-04
Bush2857NTXDeado/c 0.68 ohm 1 Watt resistor on the secondary of the chopper transformer.14-09-04
Bush2857NTXDead - off with bang/smokeC925 1000µ 25v, C926 22µ 160v, R916 0R68 1w safety res, C910 47µ 25v & other unreliable caps as in Onwa14-09-04
Bush2857NTXDead apart from Screaming PSU145v HT safety res smoking & hi res; 16v rail safety res o/c (Both inc yellow sleeving) - main cause C926 22µ 160v s/c - usual cause of 16v rail demise = Onwa psu caps14-09-04
Bush2857NTXField bounce - esp when coldC127 3µ3 off pin 10 IC10214-09-04
Bush2857NTXFlat looking picR433 150k in beam lim14-09-04
Bush2857NTXFrame bounceAdj AGC14-09-04
Bush2857NTXHT high and uncontrollablechopper base control tr leaky14-09-04
Bush2857NTXLeft hand side darker than rightC424 10µ 160v in RGB o/p supply14-09-04
Bush2857NTXLow contrast & colR433 150k near LOPTx o/c14-09-04
Bush2857NTXNicam poppingX001 13.104Mhz Xtal faulty14-09-04
Bush2857NTXNo pic - just grey raster, sound & OSG OKR435 0R68 12v reg feed res gone hi res14-09-04
Bush2857NTXNo soundIC101 TDA3857 sound IF14-09-04
Bush2857NTXNo sound then shut down after short whileIC601 pin 29 low ident signal of 4v - should be 8v - C136 0µ02 leaky14-09-04
Bush2857NTXPoor pic - lacks crispnessR433 150k in beam lim hi res14-09-04
Bush2857NTXPoor reg - width varies with brillC905 220µ 400v mains smoother14-09-04
Bush2857NTXSmall pulsating rasterC924 22mfd 250v HT smoothing cap o/c14-09-04
Bush2857NTXSt/by onlyR125 2R2 12v feed to line osc o/c14-09-04

Bush2857NTXSync crushing from cold11.5v supply slightly low - R436 6R8 2w hi res14-09-04
Bush2857NTXSync poor & cogging from cold3.3mfd 50v in IF can14-09-04
Bush2857NTXSync poor when coldC127 3µ3 50v in IF can14-09-04
Bush2857NTXVert green line down lh sideD408 S529G14-09-04
Bush2857NTXWeak contrastR433 150k o/c14-09-04
Bush2857NTXWidth, height & sound varies wildlyC926 22µ 160v high esr14-09-04
Bush2857NTXADull picR433 180k in beam lim14-09-04
Bush2857NTXAHigh htC910 47µ & C908 10µ14-09-04
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