[Amps] TL-922A Fan replacement found

[Artek Manuals]

OK after a bit of sleuthing and help from the A/C repair guy next door 
who has a meter that measured the airflow I found two  probable exact 
replacements for the fan in the TL-922A... Which suggested that this was 
an ~53CFM fan that originally was spec'd at 100V/7W probably 1700RPM. 
Size: 120mm x 120mm x 38mm

The first from Mouser is a Sanyo Denki fan #109S006 a very quiet fan at 
28dBa. Problem is that it is a non stocked item with a minimum order 
quantity 40pcs at $24.76 ( extended order price of $990 !) ... deal 
breaker for sure

With the spec sheet for the Sanyo in hand I could now look for other 
equivalents ! . I found the following on Amazon.
"AC Infinity LS1238",  62 CFM @32dba  120V/8W (probably 7W at 100V). 
$14.99 free overnight delivery ...Bingo

Easy replacement. The new fan though rated at 62CFM measured closer to 
55CFM installed in the amp. The old fan would raise the noise level at 
the operating position when switched on by approximately 12dba as 
measured with two different phone apps. The new fan switched on raised 
the noise level by only 2db when switched on a big improvement over the 
old worn out one. Air exit temperature was identical to the old fan at 
around 30C at idle and 35C key down for 2 minutes.

So TL-922 owners  print this info out and store it with your manual

Tomorrow I will detail the rest of the TL-922A makeover, new tube 
sockets, new band switch, new tubes and a W8JI grid grounding party


Cheers
Dave
NR1DX






-- 
Dave
Manuals at ArtekManuals.com
www.ArtekManuals.com


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