Intermittent or No VHF on Bush VHF62 - UK Vintage Radio Repair and Restoration Discussion Forum

Top Cap · 1st Oct 2006, 12:22 am

There was no VHF reception on this set and I suspected the ECC85. I did not have a spare however but I did find an E88CC so I gave it a try just as a quick test. The VHF was restored so I ordered an ECC85 but found after fitting that it was back to no VHF. Puzzled, I tried my E88CC and found that this no longer worked.

So off came the tuner cover and after some very careful probing I discovered a dry joint as arrowed in the attached photo. I've placed this up on the Forum as it looks like this may manifest itself in other similar tuners, there wasn't much solder on the connection.

paulsherwin · 1st Oct 2006, 12:31 am

Well done, that's a good result. Randomly changing valves (or indeed other components) can mask an underlying problem - a useful wakeup call for all of us.

Paul

Hunts smoothing bomb · 6th Oct 2006, 10:48 pm

Excellent work!

I have a VHF71 (which works fine) and presume the VHF tuner is identical

1st Oct 2006, 12:22 am	#1
Top Cap Octode Join Date: Mar 2006 Location: Watford, Hertfordshire, UK. Posts: 1,270	Intermittent or No VHF on Bush VHF62 There was no VHF reception on this set and I suspected the ECC85. I did not have a spare however but I did find an E88CC so I gave it a try just as a quick test. The VHF was restored so I ordered an ECC85 but found after fitting that it was back to no VHF. Puzzled, I tried my E88CC and found that this no longer worked. So off came the tuner cover and after some very careful probing I discovered a dry joint as arrowed in the attached photo. I've placed this up on the Forum as it looks like this may manifest itself in other similar tuners, there wasn't much solder on the connection. Attached Thumbnails

1st Oct 2006, 12:31 am	#2
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,934	Re: Intermittent or No VHF on Bush VHF62 Well done, that's a good result. Randomly changing valves (or indeed other components) can mask an underlying problem - a useful wakeup call for all of us. Paul

6th Oct 2006, 10:48 pm	#3
Hunts smoothing bomb Octode Join Date: Oct 2005 Location: Wimborne, Dorset, UK. Posts: 1,407	Re: Intermittent or No VHF on Bush VHF62 Excellent work! I have a VHF71 (which works fine) and presume the VHF tuner is identical __________________ Lee