| Make | Model | Problem | Solution | Date |
| | | |
| Found: 626
|
| Bush | 2857NTX | No sound then shut down after short while | IC601 pin 29 low ident signal of 4v - should be 8v - C136 0µ02 leaky | 14-09-04 |
| Bush | 2857NTX | Poor pic - lacks crispness | R433 150k in beam lim hi res | 14-09-04 |
| Bush | 2857NTX | Poor reg - width varies with brill | C905 220µ 400v mains smoother | 14-09-04 |
| Bush | 2857NTX | Small pulsating raster | C924 22mfd 250v HT smoothing cap o/c | 14-09-04 |
| Bush | 2857NTX | St/by only | R125 2R2 12v feed to line osc o/c | 14-09-04 |
| Bush | 2857NTX | Sync crushing from cold | 11.5v supply slightly low - R436 6R8 2w hi res | 14-09-04 |
| Bush | 2857NTX | Sync poor & cogging from cold | 3.3mfd 50v in IF can | 14-09-04 |
| Bush | 2857NTX | Sync poor when cold | C127 3µ3 50v in IF can | 14-09-04 |
| Bush | 2857NTX | Vert green line down lh side | D408 S529G | 14-09-04 |
| Bush | 2857NTX | Weak contrast | R433 150k o/c | 14-09-04 |
|
|
| Bush | 2857NTX | Width, height & sound varies wildly | C926 22µ 160v high esr | 14-09-04 |
| Bush | 2857NTXA | Dull pic | R433 180k in beam lim | 14-09-04 |
| Bush | 2857NTXA | High ht | C910 47µ & C908 10µ | 14-09-04 |
| Bush | 2857NTXA | Tuner drift | because AFC link had been connected to tuner (not req) AFC volts goes to micro instead | 14-09-04 |
| Bush | 285NS | Blank raster with fb lines | R409 4.7 kOhm burnt; RC529 10 Ohm SMD fusible o/c; C416 680 pF 2kV leaky | 14-09-04 |
| Bush | 2863NTX | Field collapse | 33v supply missing - R818 33k o/c | 14-09-04 |
| Bush | 2863NTX | Field collapse | No ramp sig pin 42 of TDA8362. R818 22k 1w o/c | 14-09-04 |
| Bush | 2863NTX | int switches between mono & stereo | can be tuner low spec - ?40 CPC | 14-09-04 |
| Bush | 2863NTX 11AK19 | Dead - LOPTr s/c | When replaced runs hot with bottom cogging - dry joint on link J613 | 14-09-04 |
| Bush | 2863NTX 11AK19E3 | Dead with HT of 16v - ok on dummy load | Supply to 5v reg missing - R867 0R33 o/c | 14-09-04 |
| Bush | 2866NTX | Blank raster only when tuning | R124 15k 1w o/c | 14-09-04 |
| Bush | 2866NTX | Dead | PSU elec caps, BUZ77, hi value r's | 14-09-04 |
| Bush | 2866NTX | Dead | LOPTx, D577 s/c, R711 on e/w (4R7) | 14-09-04 |
| Bush | 2866NTX | Dead | LOPTr Q602, C620 470nF 400v, C698 1000pF 2Kv, D105 BYD33J, I576 TDAFOP chip & R575 4k7 hi res | 14-09-04 |
| Bush | 2866NTX | Dead | R103 47k 1w in PSU o/c | 14-09-04 |
| Bush | 2866NTX | Dead - chopper tr s/c | R102 68k 2w & replace C106 33nF 630v, and C107 1Nf 2kv. As
part of the fault, R101 2r2 5w was open circuit, For good measure, the following should also replaced c109 1uF 50v, C112 47uF, I101 TDA4605-3,
R108 270k 2w, R109 680k 2w. | 14-09-04 |
| Bush | 2866NTX | Dead - LOPTr BU2508DF s/c | Line Drive Transistor (Q580) - Type "F422" - Fitted 2SC2271 was the cause even tho' checked ok | 14-09-04 |
| Bush | 2866NTX | Dead - LOPTr Q501 BU2508DF s/c | R604 3R3 2w on E/W panel overheating when LOPTr replaced - C596 0µ011 o/c | 14-09-04 |
| Bush | 2866NTX | Dead - mains fuse blown | chopper transistor (2SK 2545), LOPTr(BU2508DF), E-W driver
(TDA8145), R618 (15k) R711 (3R3 0.5W fusible), C600 (1uf 250V electrolytic) all caused by C620 (0.47uf 250V) S correction cap going open circuit | 14-09-04 |
| Bush | 2866NTX | Dead no st/by led | R102 68k 1W; R109 680k 0.5W o/c in psu | 14-09-04 |