I have an old analogue Sony Bravia TV which I use in my home office with a Dish TV set top box. Not used often, but useful to watch the odd thing, and use the set top box for recording to USB.
The TV mostly works perfectly, but sometimes when turning it on using the power button on top of the set, it doesn't turn on. Sometimes unplugging and replugging the power cord gets it going. If it doesn't, then just leaving for a while and trying again later will make it work.
Lately I have been leaving it in standby and using the remote to turn it on. It sits there in standby with the red light on, for days, no problem. But every now and then, when I use the remote to turn it on, it goes dead again. I note that if I press the remote power button very quickly, it's usually ok, but if I keep my finger on the button a bit too long, it goes dead. Any ideas what is happening?

Edited by rpvr at 9:41 am, Tue 9 Mar

rpvr - 2021-03-09 09:40:00

Maybe some of the capacitors have gone a bit dodgy on the circuit board?

tygertung - 2021-03-09 11:11:00

tygertung wrote:

Maybe some of the capacitors have gone a bit dodgy on the circuit board?

yup first thing i was thinking/ i have a cmv monitor who would turn on for 1/2 a secound and then off.. having watched a lot of repair vids fom eev blog automotive ecu repairs etc. the most common thing is failing electrolytic caps.
so i took all numbers off caps and did order them from digikey only high grade caps. as manufacturer will fit onhanglow caps to cut manufacturer costs. cost me like 30 bux for good caps replaced em all and woala it worked again........ probably will still work in 30 years from now as i used nippon chemikon and würth capacitors to fix it.
klm or something are the nippon chemicons rollsroice of capacitor rubicon are porsches
https://www.digikey.co.nz/

Edited by intrade at 11:57 am, Tue 9 Mar

intrade - 2021-03-09 11:50:00

The problem though, is always a failure to start. It doesn't switch on then off. If it does start, it always keeps going until switched off, i.e it has never shut down in the middle of watching anything. Sometimes it has been on for hours. Still likely to be capacitors?

rpvr - 2021-03-09 14:02:00

I think so, I similarly had a bedroom analogue Sony Bravia with the same issue, had to cycle the power button 15-20 times and finally it would catch. Leaving it on standby was better but sooner or later someone would turn it off with the power button and then the same problem. Threw it away when we upgraded the lounge TV.

I've recapped a couple of free Dell PC's and it's not worth the effort, especially when you don't have a soldering iron that has the heat and finesse for lead-free solder.

gyrogearloose - 2021-03-09 17:47:00

rpvr wrote:

The problem though, is always a failure to start. It doesn't switch on then off. If it does start, it always keeps going until switched off, i.e it has never shut down in the middle of watching anything. Sometimes it has been on for hours. Still likely to be capacitors?

Quite possible

nice_lady - 2021-03-09 17:53:00

This message was deleted.

kittycatkin - 2021-03-09 18:40:00

kittycatkin wrote:

Woala ???

might be voila

king1 - 2021-03-09 19:12:00

king1 wrote:

might be voila

it means there you go. its a mix word from german french and italian..

intrade - 2021-03-09 20:13:00

I have an old oscilloscope from the 60s which operates a bit intermittently, it might have dodgy capacitors also.

tygertung - 2021-03-10 08:14:00

intrade wrote:

yup first thing i was thinking/ i have a cmv monitor who would turn on for 1/2 a secound and then off.. having watched a lot of repair vids fom eev blog automotive ecu repairs etc. the most common thing is failing electrolytic caps.
so i took all numbers off caps and did order them from digikey only high grade caps. as manufacturer will fit onhanglow caps to cut manufacturer costs. cost me like 30 bux for good caps replaced em all and woala it worked again........ probably will still work in 30 years from now as i used nippon chemikon and würth capacitors to fix it.
klm or something are the nippon chemicons rollsroice of capacitor rubicon are porsches
https://www.digikey.co.nz/

It's funny you should say that as I have a cheap kids keyboard from the 80s from Hong Kong (Hong Kong manufacturer Video Technology, now known as V-Tech). I opened it up, and however it was using nice Japanese capacitors, not cheap budget ones).

So even cheap budget kids toy keyboard from 80s from Hong Kong uses nice capacitors.

tygertung - 2021-03-10 08:17:00

intrade wrote:

it means there you go. its a mix word from german french and italian..

Where's the german or Italian in Voila?

It's pure French, intrade! Translates as "See there"

Edited by hazelnut2 at 8:36 am, Wed 10 Mar

hazelnut2 - 2021-03-10 08:35:00

hazelnut2 wrote:

Where's the german or Italian in Voila?

It's pure French, intrade! Translates as "See there"

yea but not the way i wrote it. we also used the english word food or fooden as in going to eat .. or moschen bue to the fact switzerland has 4 different languages anything goes in swiss german .. loads of words different from one to another district 80km away
'kindergarten' is a pure german word just to point out how english steals words also.
kinder= children as in more then one garten= garden.

Edited by intrade at 11:18 am, Wed 10 Mar

intrade - 2021-03-10 11:12:00

intrade wrote:

yea but not the way i wrote it. we also used the english word food or fooden as in going to eat .. or moschen bue to the fact switzerland has 4 different languages anything goes in swiss german .. loads of words different from one to another district 80km away
'kindergarten' is a pure german word just to point out how english steals words also.
kinder= children as in more then one garten= garden.

i wiesses scho! i bruche chei Schwiizer-tuutsch Stunde.

"Handy" 'Dancing" 'Parking" are examples of verbs/adjectives turned to nouns in Switzerland. Language appropriation goes both ways! lol At least ' Kindergarten' makes English sense when translated not like the other three I mentioned.

But you know what? Good punctuation is used in both languages, a fact which makes someone's English posts hard to read.

hazelnut2 - 2021-03-10 14:31:00

Well I guess we can't expect everyone to be experts in punctuation. I guess it will just leave a little more room for interpretation.

tygertung - 2021-03-10 15:36:00