Maybe you should try reflowing the solder on that amplifier IC?
Dave Casey
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On Sat, December 13, 2014 6:01 pm, system100m@... [TekScopes] wrote:
Hi everybody ! I just bought a Tek 2335 which has some issues with
channel 1 it appears... At first once I powered it up, the vertical line
would wobble until it would totally disappear after a few minutes. I
tried to detect the bad component and found that spraying some freeze
spray on the vertical amplifier (marked 155-0220-00) ceramic chip/IC, had
made it go back. Now, it doesn't disappear at all anymore, only wobbles
very little the first 1-2 minutes it on, and becomes stable... I wonder
if anyone knows whether its the vertical amplifier which is bad ? or any
other known issue or component which would need checking ?
If anyone has the service manual for any of the Tek 2335/2336/2337 I'd be
very thankful...
Thanks !
