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| Forum |
Topic |
Author |
Replies |
Posted |
| Television Troubleshooting | kv-29c5d sony 2 blink red led | Borabora | 4 | 2007-06-01 12:51 | | First 650 characters of this post | Hello,this is most probabely caused by a shortened line output transistor Q533. In that case, you´ll measure a short between the ´C´ and ´E´ pins of the transistor.There are 2 reason this transistor becomes shortened. First is a due to a defective flyback transformer, but the most seen problem is that there are some dry joints in the driver stage of the line output transistor.The ´B´ pin of Q533 is connected by some resistors to a small transformer. These resistors, the transformer and the driving transistor at the ´other´ side of the driving transformer co | | Television Troubleshooting | KV32CS70B | Borabora | 10 | 2006-03-29 09:05 | | First 650 characters of this post | Hello,how stupid of me:Did you check the (bridge) rectifier for the audio supply voltage? I don\'t have the manual at hand right now, and I don\'t know by heart what kind of rectifier is used. This can clarify why the ground resistor was open en why error 2 is displayed now.By the way: there is one strange element in your story, because you wrote that the main relay doesn\'t close. Normally the explanation of error 2 is an over-current situation of the power supply. To be able to produce more current as defined, you should think the supply must be working first. | | Television Troubleshooting | Newbie Help Required :o) | Borabora | 5 | 2005-09-12 05:52 | | First 650 characters of this post | Hello,this has nothing to do with the set-top box itself. Only the connection of the scart-connector could cause the printed circuit board to deform, and as a result some solder connections could become loose when the set is warm. Does the set now work after first switching on, or is the state that the error 2 is displayed permanently?If the set starts immediately to blink with error 2, the line output transistor Q533 would be shortened and has to be replaced. The typenumber is 2SD2539 and the Sony partnumber is 8-729-040-62.The root cause of the problem are bad | | Television Troubleshooting | Question for Bora Bora from Friek | Borabora | 2 | 2004-09-13 14:50 | | First 650 characters of this post | Dag Friek,sorry voor de late reactie, maar er ging een hoop tijd in repareren zitten de afgelopen week.Ik had mij in eerste instantie vergist in het type TV waar je een vraag over stelde. Ik dacht dat het een model met een FE1-chassis was, maar de KV-25/29C1x heeft het oudere BE3D-chassis.Daarom dacht ik in eerste instantie aan gloeidraad/kathode-sluiting in de beeldbuis, maar bij nader inzien denk ik dat je last hebt van een onterecht aansprekende stroombeveiliging. In dat geval wordt error 2 weergegeven op het moment dat het beeld op het scherm wil verschijnen. |
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